Analysis
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max time kernel
144s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
28/01/2024, 21:30
Static task
static1
Behavioral task
behavioral1
Sample
7e0daefa772c4e91427b7e227464a94a.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
7e0daefa772c4e91427b7e227464a94a.exe
Resource
win10v2004-20231215-en
General
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Target
7e0daefa772c4e91427b7e227464a94a.exe
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Size
846KB
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MD5
7e0daefa772c4e91427b7e227464a94a
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SHA1
47b45eae10de91705fb957be36415a0a3575ae3d
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SHA256
0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908
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SHA512
cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650
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SSDEEP
24576:0OeSD0Ks9nL9wm1saIFLe4kjDtbuaPWAEDq/:0hL9w/e4sDYa+PDq
Malware Config
Extracted
djvu
http://astdg.top/nddddhsspen6/get.php
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extension
.moqs
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offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
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payload_url
http://securebiz.org/dl/build2.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/2348-2-0x00000000022B0000-0x00000000023CB000-memory.dmp family_djvu behavioral2/memory/2500-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2500-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2500-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2500-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2500-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4364-37-0x0000000000400000-0x0000000000537000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 7e0daefa772c4e91427b7e227464a94a.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2944 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\56a91300-2e67-458d-ba1a-4b11e616813f\\7e0daefa772c4e91427b7e227464a94a.exe\" --AutoStart" 7e0daefa772c4e91427b7e227464a94a.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 7 api.2ip.ua 8 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2348 set thread context of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 4008 set thread context of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 -
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 2500 7e0daefa772c4e91427b7e227464a94a.exe 2500 7e0daefa772c4e91427b7e227464a94a.exe 4364 7e0daefa772c4e91427b7e227464a94a.exe 4364 7e0daefa772c4e91427b7e227464a94a.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2348 wrote to memory of 2500 2348 7e0daefa772c4e91427b7e227464a94a.exe 85 PID 2500 wrote to memory of 2944 2500 7e0daefa772c4e91427b7e227464a94a.exe 86 PID 2500 wrote to memory of 2944 2500 7e0daefa772c4e91427b7e227464a94a.exe 86 PID 2500 wrote to memory of 2944 2500 7e0daefa772c4e91427b7e227464a94a.exe 86 PID 2500 wrote to memory of 4008 2500 7e0daefa772c4e91427b7e227464a94a.exe 87 PID 2500 wrote to memory of 4008 2500 7e0daefa772c4e91427b7e227464a94a.exe 87 PID 2500 wrote to memory of 4008 2500 7e0daefa772c4e91427b7e227464a94a.exe 87 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89 PID 4008 wrote to memory of 4364 4008 7e0daefa772c4e91427b7e227464a94a.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2348 -
C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2500 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2944
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C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4008 -
C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4364
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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
MD57e620bb51c6346619ece5d41f4ac9ccf
SHA155f8435cc4f740be20cc8f3e1f3709b3e37bff89
SHA256972331bf876251e477d6232910b63cc2901ea9a039f03161b07bd4851d1452ab
SHA5124b9a134d298f454348c3bdd274fa872df5d9e8fd107dce8792430837ab934c611eef26a2e0ec8bbc88bfc94a5b0c0e6add257ff1abcecf8fe6b3dddd1bb14874
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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
MD5c642ff867b62d9b88eca2ef043df3d74
SHA1640cfee218cc457492d1bbe3974093d5cf2dc287
SHA25663cbd31fb5bddf2dbaf49a5659f36f98bde8e410d6c3aaee5ca059cd2bd44f66
SHA5129896aa1fde30c2b14862551ec013ab188d1496fbf332a2afecf81a1cce3ce37092bcfb1b7a7528e12c5ae4c4b1c1bf7af5fa0fc43aa78733b87f5e549e7164c1
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5335d879333160cef5e00aff29c9e4502
SHA17fd8518e51506d6bbf3910a78b890fd7e300542c
SHA256cc15bc48459238bdf9c0c0bd61fe7072e110bf758aa75025630e11531ab5082b
SHA5129437b8045ce462131f74ade7081de1bf7eb0513b1b85f08c1fa5e3f477fc5687d0bfae4cfc984ed0bbc19dc90c26720baa5c54953038e4f004d8ce341d05bf14
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C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f\7e0daefa772c4e91427b7e227464a94a.exe
Filesize846KB
MD57e0daefa772c4e91427b7e227464a94a
SHA147b45eae10de91705fb957be36415a0a3575ae3d
SHA2560905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908
SHA512cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650