Analysis
- max time kernel
65s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
24/01/2023, 12:16
Static task
static1
Behavioral task
behavioral1
Sample
a9bac1dee06b3257cab19cb09bef3d1c.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a9bac1dee06b3257cab19cb09bef3d1c.exe
Resource
win10v2004-20221111-en
General
- Target a9bac1dee06b3257cab19cb09bef3d1c.exe
- Size 732KB
- Sample230124-pff3caag22
- SHA256 dca4aa089e3a75aa3e0611e3479a0e7125b61fbab3ddc3556389dfd593f15eab
- MD5 a9bac1dee06b3257cab19cb09bef3d1c
- SHA1 2be37ca987a82592dde5e01293266a6a26e7892c
- SHA512 db5bbb434d50f16562a5e590f591a55337ccaf8618b46d8310a8eaef81b141120e4f7dbc8129a9e318f2c5a6e1c75658f8f1cef90c542c1aa9995ced616a713c
- SSDEEP 12288:dpiiinM8+zlgy0DjQxGZeS5eLebl75VAJSZ:dpiiiM8+z5mjQEZeS5eLeprAs
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
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djvu
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http://spaceris.com/test1/get.php
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extension
.poqw
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offline_id
ZMk7348t4yGVy3t2uxofhOwYXOGjluI9PiRO8dt1
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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
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vidar
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2.2
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19
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https://t.me/litlebey
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https://steamcommunity.com/profiles/76561199472399815
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profile_id
19
Signatures
- Detected Djvu ransomware 10 IoCs
resource yara_rule behavioral2/memory/5020-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4460-136-0x0000000004AE0000-0x0000000004BFB000-memory.dmp family_djvu behavioral2/memory/5020-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-164-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 260 build2.exe 3568 build2.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation a9bac1dee06b3257cab19cb09bef3d1c.exe Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation a9bac1dee06b3257cab19cb09bef3d1c.exe Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation build2.exe - Loads dropped DLL 2 IoCs
pid Process 3568 build2.exe 3568 build2.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 912 icacls.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\af42cc67-7ce0-467c-84db-b124e1eac642\\a9bac1dee06b3257cab19cb09bef3d1c.exe\" --AutoStart" a9bac1dee06b3257cab19cb09bef3d1c.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 9 api.2ip.ua 10 api.2ip.ua 15 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4460 set thread context of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 1572 set thread context of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 260 set thread context of 3568 260 build2.exe 91 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 - Delays execution with timeout.exe 1 IoCs
pid Process 2108 timeout.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 2036 a9bac1dee06b3257cab19cb09bef3d1c.exe 2036 a9bac1dee06b3257cab19cb09bef3d1c.exe 3568 build2.exe 3568 build2.exe - Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 4460 wrote to memory of 5020 4460 a9bac1dee06b3257cab19cb09bef3d1c.exe 81 PID 5020 wrote to memory of 912 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 83 PID 5020 wrote to memory of 912 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 83 PID 5020 wrote to memory of 912 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 83 PID 5020 wrote to memory of 1572 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 84 PID 5020 wrote to memory of 1572 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 84 PID 5020 wrote to memory of 1572 5020 a9bac1dee06b3257cab19cb09bef3d1c.exe 84 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 1572 wrote to memory of 2036 1572 a9bac1dee06b3257cab19cb09bef3d1c.exe 87 PID 2036 wrote to memory of 260 2036 a9bac1dee06b3257cab19cb09bef3d1c.exe 90 PID 2036 wrote to memory of 260 2036 a9bac1dee06b3257cab19cb09bef3d1c.exe 90 PID 2036 wrote to memory of 260 2036 a9bac1dee06b3257cab19cb09bef3d1c.exe 90 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 260 wrote to memory of 3568 260 build2.exe 91 PID 3568 wrote to memory of 4356 3568 build2.exe 92 PID 3568 wrote to memory of 4356 3568 build2.exe 92 PID 3568 wrote to memory of 4356 3568 build2.exe 92 PID 4356 wrote to memory of 2108 4356 cmd.exe 94 PID 4356 wrote to memory of 2108 4356 cmd.exe 94 PID 4356 wrote to memory of 2108 4356 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4460 -
C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5020 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\af42cc67-7ce0-467c-84db-b124e1eac642" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:912
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C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1572 -
C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe"C:\Users\Admin\AppData\Local\Temp\a9bac1dee06b3257cab19cb09bef3d1c.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe"C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:260 -
C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe"C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\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:3568 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe" & exit7⤵
- Suspicious use of WriteProcessMemory
PID:4356 -
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:2108
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\mozglue.dll
- Size 133KB
- SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
- MD5 8f73c08a9660691143661bf7332c3c27
- SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
- SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
- SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ProgramData\nss3.dll
- Size 1.2MB
- SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
- MD5 bfac4e3c5908856ba17d41edcd455a51
- SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
- SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
- SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 2KB
- SHA256 b75e739320fc1859c36dc338c1677929373f5dd5d606ef6ea61614a23eee7c95
- MD5 22daa805c2a6b8bbfe715fdc86f56413
- SHA1 16c81036f559b5862b0fb45a8bb8558f460f13a4
- SHA512 f5c4af15bc18daff01b111fb87d1f0c9d43857a5a63f568f85590901b1ff13071de1617274d7c73fe7336965562b21143bc668ed798a1a386130c7eb57e165a0
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 1KB
- SHA256 31f3c6aa02743ff82e7fe54bcf5c3005406d9dc4858993cc4762f33f13198c37
- MD5 5f37048de717939db22879d186493d92
- SHA1 f2fac6a9a6261397d648aec0d3f7f2ead3ae023d
- SHA512 1188df5bbfa21db355b5bf124db2949ac6d75fa95d8aa03158b1b1bd17dd5077ee1a68691ea5e8ca866f5bb4bd8dacdba80a0d1e4005de6bfc5d9499b770acc6
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 488B
- SHA256 318fcd37d08b8c28afbca82f40902e9e119f9c5faf555a20b93d305176ac4249
- MD5 ede72ea3445582b8c358fb27d760c0c8
- SHA1 b3e660238f80aed18706daa9570953f4458b8132
- SHA512 e6aea693d6e079279eb3c2dc6611f8010f0763007ec53b55a645c9ae13970cc351c0b88c5c2ac173dd749b00d993bc8312205d5763784e4e3d5b899457b4c9a2
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 482B
- SHA256 fcf1aa60f172d557d4eed4ea1cb270fdb205211236479ec73a3785599dbccf99
- MD5 8942608c71d5fd30bd8e25b1b7b17798
- SHA1 05d99063a8b8ce4629d362b010c1a839905abe2e
- SHA512 e2665a43694a44ad58719c53fd56ef704501e26c943ecf7a5fac4e0490099c5cf60937cb4b4e2163e757fd247de28853d35481f5537ab69ee466f5296e5ef0a3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe
- Size 437KB
- SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
- MD5 5bc3c0c24790b3738ab85b644a1c6fc9
- SHA1 c68547eb157a77f30e88a6c4666f6024765b70d8
- SHA512 f7aafcc10e5d1513e523bf7a1aee42316141862ba0d54f5b75ccc18f65a6cd14361728cb4a6a6ea795569431a0bc03792b132269293ba240bd3d9fa1e012c3ab
- SSDEEP 6144:ikLMq1R7dHp9jqv6zqNJqxOQ/S5TJ7y7iNsG2pvg+y4vKtQK/fu1d0EJdmTbl:ikQq1R1OVfVh/s7pktQKXu1bd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe
- Size 437KB
- SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
- MD5 5bc3c0c24790b3738ab85b644a1c6fc9
- SHA1 c68547eb157a77f30e88a6c4666f6024765b70d8
- SHA512 f7aafcc10e5d1513e523bf7a1aee42316141862ba0d54f5b75ccc18f65a6cd14361728cb4a6a6ea795569431a0bc03792b132269293ba240bd3d9fa1e012c3ab
- SSDEEP 6144:ikLMq1R7dHp9jqv6zqNJqxOQ/S5TJ7y7iNsG2pvg+y4vKtQK/fu1d0EJdmTbl:ikQq1R1OVfVh/s7pktQKXu1bd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\58485d77-4ca8-4b74-94ac-5b3ad33bc8dc\build2.exe
- Size 437KB
- SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
- MD5 5bc3c0c24790b3738ab85b644a1c6fc9
- SHA1 c68547eb157a77f30e88a6c4666f6024765b70d8
- SHA512 f7aafcc10e5d1513e523bf7a1aee42316141862ba0d54f5b75ccc18f65a6cd14361728cb4a6a6ea795569431a0bc03792b132269293ba240bd3d9fa1e012c3ab
- SSDEEP 6144:ikLMq1R7dHp9jqv6zqNJqxOQ/S5TJ7y7iNsG2pvg+y4vKtQK/fu1d0EJdmTbl:ikQq1R1OVfVh/s7pktQKXu1bd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\af42cc67-7ce0-467c-84db-b124e1eac642\a9bac1dee06b3257cab19cb09bef3d1c.exe
- Size 732KB
- SHA256 dca4aa089e3a75aa3e0611e3479a0e7125b61fbab3ddc3556389dfd593f15eab
- MD5 a9bac1dee06b3257cab19cb09bef3d1c
- SHA1 2be37ca987a82592dde5e01293266a6a26e7892c
- SHA512 db5bbb434d50f16562a5e590f591a55337ccaf8618b46d8310a8eaef81b141120e4f7dbc8129a9e318f2c5a6e1c75658f8f1cef90c542c1aa9995ced616a713c
- SSDEEP 12288:dpiiinM8+zlgy0DjQxGZeS5eLebl75VAJSZ:dpiiiM8+z5mjQEZeS5eLeprAs
- MD5 SHA1 SHA512 SSDEEP