Analysis
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max time kernel
145s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
11/03/2023, 11:10
Static task
static1
Behavioral task
behavioral1
Sample
8e72f80f57f0a2061ed8707b4ae8bd0b.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
8e72f80f57f0a2061ed8707b4ae8bd0b.exe
Resource
win10v2004-20230221-en
General
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Target
8e72f80f57f0a2061ed8707b4ae8bd0b.exe
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Size
706KB
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MD5
8e72f80f57f0a2061ed8707b4ae8bd0b
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SHA1
067df8847a06e814faa9709ff132934f1bb954e5
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SHA256
2bc245304e616ca5aea425c94b918d2f2cafcf237da2c08852523d8cbb553ae7
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SHA512
91eb36a5dad33f09e15d231c93027ac878c39f847169d155f9d6f289cdf74c9f6b0ce79a60ae3e86e8724fbcff056650a253c648a3481609b626fc3226126182
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SSDEEP
12288:zkjJyKVg8x64+MVR/t7WXjDC0OPUg9HZexMlJeqtRhjRDyBPc:zORg8FRV7WKDMgrblJeWhtuB
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.craa
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offline_id
fTU4hYOJ0niv7WAg9utRTzxXv2TcoEvGPJhzIot1
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payload_url
http://uaery.top/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
2.9
694f12963bedb0c6040fb3c74aac71e5
https://t.me/nemesisgrow
https://steamcommunity.com/profiles/76561199471222742
http://65.109.12.165:80
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profile_id_v2
694f12963bedb0c6040fb3c74aac71e5
Signatures
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Detected Djvu ransomware 16 IoCs
resource yara_rule behavioral2/memory/4032-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4032-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4032-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4324-136-0x0000000002450000-0x000000000256B000-memory.dmp family_djvu behavioral2/memory/4032-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4032-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-153-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-156-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-161-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-163-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-164-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-189-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/632-278-0x0000000000400000-0x0000000000537000-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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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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation 8e72f80f57f0a2061ed8707b4ae8bd0b.exe Key value queried \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation 8e72f80f57f0a2061ed8707b4ae8bd0b.exe Key value queried \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation build2.exe -
Executes dropped EXE 4 IoCs
pid Process 4392 build2.exe 4356 build2.exe 4104 build3.exe 752 mstsca.exe -
Loads dropped DLL 2 IoCs
pid Process 4356 build2.exe 4356 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3940 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-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f56c4844-8dc5-4188-8df4-714882b304cb\\8e72f80f57f0a2061ed8707b4ae8bd0b.exe\" --AutoStart" 8e72f80f57f0a2061ed8707b4ae8bd0b.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 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 21 api.2ip.ua 22 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4324 set thread context of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 376 set thread context of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 4392 set thread context of 4356 4392 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 692 schtasks.exe 3000 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 3364 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 4356 build2.exe 4356 build2.exe -
Suspicious use of WriteProcessMemory 53 IoCs
description pid Process procid_target PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4324 wrote to memory of 4032 4324 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 88 PID 4032 wrote to memory of 3940 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 89 PID 4032 wrote to memory of 3940 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 89 PID 4032 wrote to memory of 3940 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 89 PID 4032 wrote to memory of 376 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 90 PID 4032 wrote to memory of 376 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 90 PID 4032 wrote to memory of 376 4032 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 90 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 376 wrote to memory of 632 376 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 92 PID 632 wrote to memory of 4392 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 99 PID 632 wrote to memory of 4392 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 99 PID 632 wrote to memory of 4392 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 99 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 4392 wrote to memory of 4356 4392 build2.exe 100 PID 632 wrote to memory of 4104 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 101 PID 632 wrote to memory of 4104 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 101 PID 632 wrote to memory of 4104 632 8e72f80f57f0a2061ed8707b4ae8bd0b.exe 101 PID 4104 wrote to memory of 692 4104 build3.exe 103 PID 4104 wrote to memory of 692 4104 build3.exe 103 PID 4104 wrote to memory of 692 4104 build3.exe 103 PID 752 wrote to memory of 3000 752 mstsca.exe 106 PID 752 wrote to memory of 3000 752 mstsca.exe 106 PID 752 wrote to memory of 3000 752 mstsca.exe 106 PID 4356 wrote to memory of 2360 4356 build2.exe 109 PID 4356 wrote to memory of 2360 4356 build2.exe 109 PID 4356 wrote to memory of 2360 4356 build2.exe 109 PID 2360 wrote to memory of 3364 2360 cmd.exe 111 PID 2360 wrote to memory of 3364 2360 cmd.exe 111 PID 2360 wrote to memory of 3364 2360 cmd.exe 111
Processes
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C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4032 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f56c4844-8dc5-4188-8df4-714882b304cb" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3940
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C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe"C:\Users\Admin\AppData\Local\Temp\8e72f80f57f0a2061ed8707b4ae8bd0b.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:632 -
C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build2.exe"C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4392 -
C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build2.exe"C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build2.exe"6⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4356 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build2.exe" & exit7⤵
- Suspicious use of WriteProcessMemory
PID:2360 -
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:3364
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C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build3.exe"C:\Users\Admin\AppData\Local\27cb3707-ec3a-4e36-b3dc-2c6ed5020b17\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4104 -
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:692
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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:752 -
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:3000
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
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Filesize
382KB
MD5c56b758f00562948de9cac375422074c
SHA19f98c4c403b98aea3624d905b2e1ccbe5939c908
SHA2563df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532
SHA512a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa
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Filesize
382KB
MD5c56b758f00562948de9cac375422074c
SHA19f98c4c403b98aea3624d905b2e1ccbe5939c908
SHA2563df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532
SHA512a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa
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Filesize
382KB
MD5c56b758f00562948de9cac375422074c
SHA19f98c4c403b98aea3624d905b2e1ccbe5939c908
SHA2563df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532
SHA512a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa
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Filesize
382KB
MD5c56b758f00562948de9cac375422074c
SHA19f98c4c403b98aea3624d905b2e1ccbe5939c908
SHA2563df572ecd8ad88b1b744adc3323998b64d8303ef1a19eba3d7fd6e76aeb67532
SHA512a77a22431ccfd7e565639d90b205ff7132ddfc39a1d46c8ff5de8f71265c56706230b569fb22a72dbc6bbc7c92688ebb024b167971d3b7859c8b6b01ad9084fa
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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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\f56c4844-8dc5-4188-8df4-714882b304cb\8e72f80f57f0a2061ed8707b4ae8bd0b.exe
Filesize706KB
MD58e72f80f57f0a2061ed8707b4ae8bd0b
SHA1067df8847a06e814faa9709ff132934f1bb954e5
SHA2562bc245304e616ca5aea425c94b918d2f2cafcf237da2c08852523d8cbb553ae7
SHA51291eb36a5dad33f09e15d231c93027ac878c39f847169d155f9d6f289cdf74c9f6b0ce79a60ae3e86e8724fbcff056650a253c648a3481609b626fc3226126182
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a