General
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Target
setup.exe
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Size
224KB
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Sample
230331-a879zahd3w
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MD5
3d20262f12d885cdf4f22490c9872bff
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SHA1
87dae2235db3b3f2c62bd20e1c1df3e5e69b79dd
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SHA256
390ad41c3406b2b78a3f5b6b6084544238a11ec343a952c9d542184c79fcb0e5
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SHA512
ccf817510175117a2a15acd7b39e5a0810249a39431a6af70e9b75ac9934b6823374fb6d24ecd4586297fa2f51e36b2d94da35238625b92b33fec143c9fdd7fd
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SSDEEP
3072:PTNGTMQJQDKCBE8jl5F+q2pwcjPmX23XP8Lzdf7s14cN5XC0sgV/l70:+ZJU5BE4P2Hmzdg14cN5SA
Static task
static1
Behavioral task
behavioral1
Sample
setup.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
setup.exe
Resource
win10v2004-20230221-en
Malware Config
Extracted
smokeloader
2022
http://potunulit.org/
http://hutnilior.net/
http://bulimu55t.net/
http://soryytlic4.net/
http://novanosa5org.org/
http://nuljjjnuli.org/
http://tolilolihul.net/
http://somatoka51hub.net/
http://hujukui3.net/
http://bukubuka1.net/
http://golilopaster.org/
http://newzelannd66.org/
http://otriluyttn.org/
http://aapu.at/tmp/
http://poudineh.com/tmp/
http://firsttrusteedrx.ru/tmp/
http://kingpirate.ru/tmp/
Extracted
djvu
http://zexeq.com/test2/get.php
http://zexeq.com/lancer/get.php
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extension
.jywd
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offline_id
MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1
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payload_url
http://uaery.top/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
smokeloader
pub1
Extracted
amadey
3.65
77.73.134.27/8bmdh3Slb2/index.php
Extracted
vidar
3.2
5df88deb5dde677ba658b77ad5f60248
https://steamcommunity.com/profiles/76561199489580435
https://t.me/tabootalks
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profile_id_v2
5df88deb5dde677ba658b77ad5f60248
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user_agent
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79
Targets
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Target
setup.exe
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Size
224KB
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MD5
3d20262f12d885cdf4f22490c9872bff
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SHA1
87dae2235db3b3f2c62bd20e1c1df3e5e69b79dd
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SHA256
390ad41c3406b2b78a3f5b6b6084544238a11ec343a952c9d542184c79fcb0e5
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SHA512
ccf817510175117a2a15acd7b39e5a0810249a39431a6af70e9b75ac9934b6823374fb6d24ecd4586297fa2f51e36b2d94da35238625b92b33fec143c9fdd7fd
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SSDEEP
3072:PTNGTMQJQDKCBE8jl5F+q2pwcjPmX23XP8Lzdf7s14cN5XC0sgV/l70:+ZJU5BE4P2Hmzdg14cN5SA
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Detected Djvu ransomware
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Modifies security service
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Downloads MZ/PE file
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Stops running service(s)
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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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Accesses cryptocurrency files/wallets, possible credential harvesting
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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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Legitimate hosting services abused for malware hosting/C2
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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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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v6
Persistence
Modify Existing Service
2Registry Run Keys / Startup Folder
1Scheduled Task
1Defense Evasion
File and Directory Permissions Modification
1Impair Defenses
1Modify Registry
2Web Service
1