General
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Target
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8
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Size
744KB
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Sample
240128-2cefkadacl
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MD5
4cd9c246e62582c3ee6b3ec5942909b0
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SHA1
c7ca7da6f7cd68458874b6a0605e22211e2e475f
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SHA256
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8
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SHA512
f8c340fbbf113ef1fcce0dcdc9d0772777d375cd83b9cbaa7df17fa1b2ccb2957a0d0286bb1611d7712f1a33b3f1ebdc0b5212fceb0d702dee8e3903fce70e0d
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SSDEEP
12288:08SXwuNVxXnLroQrUP1PXSKpyTQruwOAkcMtRDf3DK2/x:08VKFLrtKpsaO/TLV
Static task
static1
Behavioral task
behavioral1
Sample
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8.exe
Resource
win10-20231220-en
Malware Config
Extracted
djvu
http://habrafa.com/test1/get.php
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extension
.cdpo
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offline_id
Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1
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payload_url
http://brusuax.com/dl/build2.exe
http://habrafa.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
7.5
e7447dc405edc4690f5920bdb056364f
https://t.me/bogotatg
https://steamcommunity.com/profiles/76561199621829149
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profile_id_v2
e7447dc405edc4690f5920bdb056364f
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7
Targets
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Target
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8
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Size
744KB
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MD5
4cd9c246e62582c3ee6b3ec5942909b0
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SHA1
c7ca7da6f7cd68458874b6a0605e22211e2e475f
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SHA256
c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8
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SHA512
f8c340fbbf113ef1fcce0dcdc9d0772777d375cd83b9cbaa7df17fa1b2ccb2957a0d0286bb1611d7712f1a33b3f1ebdc0b5212fceb0d702dee8e3903fce70e0d
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SSDEEP
12288:08SXwuNVxXnLroQrUP1PXSKpyTQruwOAkcMtRDf3DK2/x:08VKFLrtKpsaO/TLV
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Detect Vidar Stealer
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Detected Djvu ransomware
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Downloads MZ/PE file
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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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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