Analysis
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max time kernel
73s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
07/01/2023, 06:56
Static task
static1
Behavioral task
behavioral1
Sample
b34a693e486f217e7c360c93172619fa.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
b34a693e486f217e7c360c93172619fa.exe
Resource
win10v2004-20221111-en
General
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Target
b34a693e486f217e7c360c93172619fa.exe
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Size
799KB
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MD5
b34a693e486f217e7c360c93172619fa
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SHA1
227197f9958681327ab817e67f0a29e3e5d54c09
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SHA256
8d826c169a854f9b36f0635e8e1a2f27989d4e35dcab2fafa9d0b82b7621149d
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SHA512
57aa9c81f27a3fa66394e48cd2a08a64d5bfa9c719fc72146e50005d4d6f898d0827f5c8165b2fd2526a503d4fef410ac4cfa6da0d56080bf056fbb814ecbd7d
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SSDEEP
24576:rwe7W12QK8nDGffydauOvcApIqYEU/E0i+sKS:rwFe8ifyQZ3U/RixX
Malware Config
Extracted
djvu
http://spaceris.com/test1/get.php
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extension
.bpsm
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offline_id
pu5TgkFNAS5fWQ2rCzdamsmMrE5wSlTupdTI0pt1
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payload_url
http://uaery.top/dl/build2.exe
http://spaceris.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
1.8
19
https://t.me/year2023start
https://steamcommunity.com/profiles/76561199467421923
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profile_id
19
Signatures
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Detected Djvu ransomware 10 IoCs
resource yara_rule behavioral2/memory/2952-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2952-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4324-136-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral2/memory/2952-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2952-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2952-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3740-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3740-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3740-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3740-168-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Downloads MZ/PE file
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Executes dropped EXE 4 IoCs
pid Process 720 build2.exe 1052 build3.exe 8 build2.exe 3348 mstsca.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation b34a693e486f217e7c360c93172619fa.exe Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation b34a693e486f217e7c360c93172619fa.exe Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation build2.exe -
Loads dropped DLL 2 IoCs
pid Process 8 build2.exe 8 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 5040 icacls.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ede2a0c2-4bf2-4f2a-959d-6d5eaf8bb0e7\\b34a693e486f217e7c360c93172619fa.exe\" --AutoStart" b34a693e486f217e7c360c93172619fa.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 32 api.2ip.ua 37 api.2ip.ua 31 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4324 set thread context of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 796 set thread context of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 720 set thread context of 8 720 build2.exe 100 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 build2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3424 schtasks.exe 4528 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 4944 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2952 b34a693e486f217e7c360c93172619fa.exe 2952 b34a693e486f217e7c360c93172619fa.exe 3740 b34a693e486f217e7c360c93172619fa.exe 3740 b34a693e486f217e7c360c93172619fa.exe 8 build2.exe 8 build2.exe -
Suspicious use of WriteProcessMemory 53 IoCs
description pid Process procid_target PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 4324 wrote to memory of 2952 4324 b34a693e486f217e7c360c93172619fa.exe 87 PID 2952 wrote to memory of 5040 2952 b34a693e486f217e7c360c93172619fa.exe 89 PID 2952 wrote to memory of 5040 2952 b34a693e486f217e7c360c93172619fa.exe 89 PID 2952 wrote to memory of 5040 2952 b34a693e486f217e7c360c93172619fa.exe 89 PID 2952 wrote to memory of 796 2952 b34a693e486f217e7c360c93172619fa.exe 90 PID 2952 wrote to memory of 796 2952 b34a693e486f217e7c360c93172619fa.exe 90 PID 2952 wrote to memory of 796 2952 b34a693e486f217e7c360c93172619fa.exe 90 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 796 wrote to memory of 3740 796 b34a693e486f217e7c360c93172619fa.exe 93 PID 3740 wrote to memory of 720 3740 b34a693e486f217e7c360c93172619fa.exe 96 PID 3740 wrote to memory of 720 3740 b34a693e486f217e7c360c93172619fa.exe 96 PID 3740 wrote to memory of 720 3740 b34a693e486f217e7c360c93172619fa.exe 96 PID 3740 wrote to memory of 1052 3740 b34a693e486f217e7c360c93172619fa.exe 97 PID 3740 wrote to memory of 1052 3740 b34a693e486f217e7c360c93172619fa.exe 97 PID 3740 wrote to memory of 1052 3740 b34a693e486f217e7c360c93172619fa.exe 97 PID 1052 wrote to memory of 4528 1052 build3.exe 98 PID 1052 wrote to memory of 4528 1052 build3.exe 98 PID 1052 wrote to memory of 4528 1052 build3.exe 98 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 720 wrote to memory of 8 720 build2.exe 100 PID 8 wrote to memory of 2224 8 build2.exe 102 PID 8 wrote to memory of 2224 8 build2.exe 102 PID 8 wrote to memory of 2224 8 build2.exe 102 PID 2224 wrote to memory of 4944 2224 cmd.exe 104 PID 2224 wrote to memory of 4944 2224 cmd.exe 104 PID 2224 wrote to memory of 4944 2224 cmd.exe 104 PID 3348 wrote to memory of 3424 3348 mstsca.exe 106 PID 3348 wrote to memory of 3424 3348 mstsca.exe 106 PID 3348 wrote to memory of 3424 3348 mstsca.exe 106
Processes
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C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\ede2a0c2-4bf2-4f2a-959d-6d5eaf8bb0e7" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:5040
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C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:796 -
C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe"C:\Users\Admin\AppData\Local\Temp\b34a693e486f217e7c360c93172619fa.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3740 -
C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build2.exe"C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:720 -
C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build2.exe"C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:8 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build2.exe" & exit7⤵
- Suspicious use of WriteProcessMemory
PID:2224 -
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:4944
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C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build3.exe"C:\Users\Admin\AppData\Local\8ddde58b-93f2-42fb-9db8-9960256c48c9\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1052 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:4528
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3348 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:3424
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD5411cd537dcecbf901759b8e6c1bdb076
SHA1655df9870867a1760ad1a2c967b330c61767437a
SHA256aa9e441c6cf813efd9ba76fe4ae52d884a5c7d222ed221903c42f09bc14eb7db
SHA512ea780f875c86f8694f67d236a0af066b952862356edb681375e6c387103a91ce085345359f8fe83dd630d310ee6b7637512e5868951c4c257daa411ab9c03e71
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD57c56401cb6bd1ae402e06f0fe35f81c4
SHA1b82bbb9fa39266796cafcd308ef4300fc92e3399
SHA2560c58c7bc18d38a3096da6f3575f1c6f8d79b69382d8e89bb5fca917d3cdb7f65
SHA5122ea607c2dc04c8ef34ecb4c4bd297e0f0882b179303565863d1745172322133b78186fa04334e82c135e25fd717719ceec917f49682a4eac37034ea87bb2b6f3
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD5d7cde925a87868463c3694d6cf0aef88
SHA162f91a1b80b29bd9daea2c84eb8fe87e77543fd5
SHA256b9f6c91bebef00b625355201ad8963816e8abaa93cb3a64bbb6acbaacf4f556c
SHA5129690cd9ca6bdd5785ca4d0f6992272338f77f07cb4110aaff0f59ee13f9d21ae9d7867ddfe31f1302be7991237ad004e7b0708776453a0cf3a08fc7cdfcf821f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD5e70db862651a72f4e6118774d18f9f40
SHA1ab1fc217fbf7e29acfd3b3979cf92414363bd5f7
SHA256ee7c3d6bf4691be4e405d2603eb9b20ee4f1bbe10e78ecbebcf7f7ede35d768c
SHA512f7570c010b0632284a0ccbfd4c4f54ac38d9d4fa0ac4b4a641783569b1a8e4de90b1f82a2e82b0ce500504a35b6dd75ceca47ba70cb7c9c68eb3aac203afcd69
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Filesize
429KB
MD58c14bb1505244971374a88f37a4ec22a
SHA1cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0
SHA256f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962
SHA5125e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e
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Filesize
429KB
MD58c14bb1505244971374a88f37a4ec22a
SHA1cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0
SHA256f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962
SHA5125e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e
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Filesize
429KB
MD58c14bb1505244971374a88f37a4ec22a
SHA1cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0
SHA256f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962
SHA5125e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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C:\Users\Admin\AppData\Local\ede2a0c2-4bf2-4f2a-959d-6d5eaf8bb0e7\b34a693e486f217e7c360c93172619fa.exe
Filesize799KB
MD5b34a693e486f217e7c360c93172619fa
SHA1227197f9958681327ab817e67f0a29e3e5d54c09
SHA2568d826c169a854f9b36f0635e8e1a2f27989d4e35dcab2fafa9d0b82b7621149d
SHA51257aa9c81f27a3fa66394e48cd2a08a64d5bfa9c719fc72146e50005d4d6f898d0827f5c8165b2fd2526a503d4fef410ac4cfa6da0d56080bf056fbb814ecbd7d
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a