Analysis
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max time kernel
145s -
max time network
125s -
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, 05:21
Static task
static1
Behavioral task
behavioral1
Sample
e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
Resource
win10v2004-20240226-en
General
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Target
e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
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Size
799KB
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MD5
e950889fc7f88cbc4408d934e2e220f6
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SHA1
cefca2c4538365655cb1eead3f3390313b9ea18a
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SHA256
a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879
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SHA512
82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb
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SSDEEP
12288:LVHqYgXjvWYZeTPFWz5RNUDIFUEW00h/HsS54HWuE:LVKvXj7ZeTd8/0IyT00/54HW
Malware Config
Extracted
djvu
http://astdg.top/fhsgtsspen6/get.php
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extension
.nooa
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offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
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payload_url
http://securebiz.org/dl/build2.exe
http://astdg.top/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 behavioral2/memory/3864-2-0x00000000033A0000-0x00000000034BB000-memory.dmp family_djvu behavioral2/memory/5020-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5020-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3968-37-0x0000000000400000-0x0000000000537000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4204 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\83424aee-9955-4559-b024-016c853d1f90\\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe\" --AutoStart" e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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 8 api.2ip.ua 10 api.2ip.ua 26 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3864 set thread context of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 1188 set thread context of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 -
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 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 3968 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 3968 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 3864 wrote to memory of 5020 3864 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 89 PID 5020 wrote to memory of 4204 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 90 PID 5020 wrote to memory of 4204 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 90 PID 5020 wrote to memory of 4204 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 90 PID 5020 wrote to memory of 1188 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 91 PID 5020 wrote to memory of 1188 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 91 PID 5020 wrote to memory of 1188 5020 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 91 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95 PID 1188 wrote to memory of 3968 1188 e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3864 -
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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\83424aee-9955-4559-b024-016c853d1f90" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4204
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C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1188 -
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3968
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
MD502fc04a05f0ab5b286ca315ccd1d0afc
SHA18922bf13880c9ae26a18fec2585fb90baaefa97c
SHA25680ccbc092f36b25cd6140e6aac7716db1bb0ad0f95d7d3eddf9c0d808360c760
SHA51291bd335b6845756586b0f7c630d5ead7fe3a4ce9c8581b1541436c4399ac00c52a80ed471c7d04207ebafab62b99668724c0fc60a552f223f3309edddcfffa21
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD50cb61ca512884acf25d2ebbda01513ce
SHA141ebe16290aaa63ab7cf9b7f90b8f828524bd9c6
SHA256bae7842eb139a77a8a8fe83438c2935f9debaed3bc8db5e25e8fd4e32a0606f8
SHA512ae5fe9dbb980bb6d824d1edeb08da551d63cd7314cb7b6b2937f5b934962865baf52038d6902dbe00a551a6e44eb57136a047c77f6cc63ee6b5453ed6d782c5d
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C:\Users\Admin\AppData\Local\83424aee-9955-4559-b024-016c853d1f90\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
Filesize799KB
MD5e950889fc7f88cbc4408d934e2e220f6
SHA1cefca2c4538365655cb1eead3f3390313b9ea18a
SHA256a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879
SHA51282b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb