Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
09/04/2024, 02:51
Static task
static1
Behavioral task
behavioral1
Sample
3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe
Resource
win11-20240221-en
General
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Target
3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe
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Size
771KB
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MD5
a63c52af85c756814f48887bd8c50e8d
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SHA1
8fcb6f701b995d0c5bb9b8c3d77199a7aaae63ec
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SHA256
3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee
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SHA512
505dea5fe013e031aab981c6816254977dbcd5c38aae5410f31fb7d40b8b619fa43ad93d467426034926d79386d08ad330ea0711a052c03a843b16186e386596
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SSDEEP
12288:/JXZ4iJn1bSWll7DBPyOqZ9v70PTIultZdTL50WV1w2:5Zl7DBKL9uIul/d3G2
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.uajs
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral1/memory/848-2-0x0000000004A80000-0x0000000004B9B000-memory.dmp family_djvu behavioral1/memory/1672-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1672-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1672-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1672-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1672-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4980-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4000 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0da68bdb-094f-4142-8b7b-6fc14f43802c\\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe\" --AutoStart" 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe -
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 4 api.2ip.ua 7 api.2ip.ua 18 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 848 set thread context of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 3064 set thread context of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 4980 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 4980 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 848 wrote to memory of 1672 848 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 87 PID 1672 wrote to memory of 4000 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 89 PID 1672 wrote to memory of 4000 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 89 PID 1672 wrote to memory of 4000 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 89 PID 1672 wrote to memory of 3064 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 90 PID 1672 wrote to memory of 3064 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 90 PID 1672 wrote to memory of 3064 1672 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 90 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92 PID 3064 wrote to memory of 4980 3064 3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1672 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0da68bdb-094f-4142-8b7b-6fc14f43802c" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4000
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C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3064 -
C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe"C:\Users\Admin\AppData\Local\Temp\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4980
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5580071ebd24cccfd9268e1474bb8134e
SHA1443665efe7009fe1d4c5bc4786dc9cc540e59ef6
SHA25653e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461
SHA51213d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5294ea7f82150861b5badb98f7504b206
SHA140efea5e7edee7d570579e7bd4d467726a30545e
SHA2563ddbe6c0381cbdbdefe0c3b35310523affa44236cfcffcb005149eb372ce05ca
SHA5122cc6464e4af4335fc2fdccdf2349a709397ce2df80e296d9013217a336ea7199e213b5c14253ce5bbfd120f41c8af7ea340df3e6551efdbf1048ef4133ecf2ce
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5709e23b36c9ba509ac708dc9a73e86f9
SHA16d9aac189ddf3c128d088d6018c3ef902abb91e0
SHA2562827fd8e140ba1393d0f42114eef4dcf361ab88d93e707e107653fe33dec833c
SHA512853446ebf8f6445fd9e07cfd029c641f5fb6899ff095ba9938b53530b221d7af81fb94a9dc5f8bf44271ba6b62bbb928dbd3fba4454cc89dcabf568a4c5b6d2e
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C:\Users\Admin\AppData\Local\0da68bdb-094f-4142-8b7b-6fc14f43802c\3e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee.exe
Filesize771KB
MD5a63c52af85c756814f48887bd8c50e8d
SHA18fcb6f701b995d0c5bb9b8c3d77199a7aaae63ec
SHA2563e92693afc4f1eaf83695fc2c1d0c2b9e1bbf837a46acc6b978e6ba7ee1528ee
SHA512505dea5fe013e031aab981c6816254977dbcd5c38aae5410f31fb7d40b8b619fa43ad93d467426034926d79386d08ad330ea0711a052c03a843b16186e386596