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General
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Target
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890
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Size
715KB
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Sample
231012-s9y2sshg7x
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MD5
ba99fe00ac092c630639c1b25b2a9f83
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SHA1
1ca03db525bc865c70ef19e3f0219775b5a320d6
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SHA256
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890
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SHA512
4172ce111e3c123dfe45dd4a3ccbf9edc72c12ad0df0a108283a23800bb9033cc647cad2b23b995f16fbc742ef5c1ac02987f5df0f8e1c5e98c122308c5acbdd
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SSDEEP
12288:0Hk0jEdZy6lrbvBJZe7f2lgz/w89MVfXVbkSGuwzE8/072gmEmHeZUddE7bLf3UF:0FEdlrbFeLBz/CvVb3uzEMgmtHeZW2Gz
Static task
static1
Behavioral task
behavioral1
Sample
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890.exe
Resource
win10v2004-20230915-en
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.wwza
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offline_id
LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
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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
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890
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Size
715KB
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MD5
ba99fe00ac092c630639c1b25b2a9f83
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SHA1
1ca03db525bc865c70ef19e3f0219775b5a320d6
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SHA256
7b1e08a2e6a809a06358ac67496c1be7027a047fbcac50a100718e3eb3d53890
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SHA512
4172ce111e3c123dfe45dd4a3ccbf9edc72c12ad0df0a108283a23800bb9033cc647cad2b23b995f16fbc742ef5c1ac02987f5df0f8e1c5e98c122308c5acbdd
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SSDEEP
12288:0Hk0jEdZy6lrbvBJZe7f2lgz/w89MVfXVbkSGuwzE8/072gmEmHeZUddE7bLf3UF:0FEdlrbFeLBz/CvVb3uzEMgmtHeZW2Gz
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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 Enterprise v15
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