General
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Target
NEAS.NEAS9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01aeexeexe_JC.exe
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Size
738KB
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Sample
231016-qnzebshb74
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MD5
15a8142992786ff28bb79fb2b7d47f6e
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SHA1
c5fb299009599c93fef087734e13f1dc195f8ec1
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SHA256
9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01ae
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SHA512
aba1c44e1e893364a7e9f0f896d205c24949f77a3d0a64dd7883768a5e3ee43771812fe7ec57dcbc39fd218b643f621f11f7738e0c1be2cd647f353b8b245743
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SSDEEP
12288:xcfUbjw1xHxDEfUViMVkqATGFMPZhkBH6Jrrn5/Ywmn/nJuR2ks7S:CfUbjysfUGHcMPZhkBaJrTZYzJuES
Static task
static1
Behavioral task
behavioral1
Sample
NEAS.NEAS9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01aeexeexe_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
NEAS.NEAS9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01aeexeexe_JC.exe
Resource
win10v2004-20230915-en
Malware Config
Extracted
djvu
http://zexeq.com/test2/get.php
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extension
.ptrz
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offline_id
43WPLl8Cnh3dZoiWhf8tP8Q9CrMBVUL2dwHB2Rt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
6
d37c48c18c73cc0e155c7e1dfde06db9
https://steamcommunity.com/profiles/76561199560322242
https://t.me/cahalgo
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profile_id_v2
d37c48c18c73cc0e155c7e1dfde06db9
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user_agent
Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0 uacq
Targets
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Target
NEAS.NEAS9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01aeexeexe_JC.exe
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Size
738KB
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MD5
15a8142992786ff28bb79fb2b7d47f6e
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SHA1
c5fb299009599c93fef087734e13f1dc195f8ec1
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SHA256
9a203a1f050818238d950b70465e679c6475cf974e7c823d188645ba6aec01ae
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SHA512
aba1c44e1e893364a7e9f0f896d205c24949f77a3d0a64dd7883768a5e3ee43771812fe7ec57dcbc39fd218b643f621f11f7738e0c1be2cd647f353b8b245743
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SSDEEP
12288:xcfUbjw1xHxDEfUViMVkqATGFMPZhkBH6Jrrn5/Ywmn/nJuR2ks7S:CfUbjysfUGHcMPZhkBaJrTZYzJuES
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Detected Djvu ransomware
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Checks installed software on the system
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
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1