MALICIOUS — DumpStack.log.tmp .exe
MALICIOUS — DumpStack.log.tmp .exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Krap family. 5 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
9be17d1cfc277833c69b5aa9a9a8a2fc5cc781bf15aff987eaf6a932fc8c52b7 - SHA-1:
cf1fb416638da487808199175988cbc06f47f72d - MD5:
bbfb95ef6d785dd7930837918d504284 - imphash:
3a2003ea545fe942681da9e7683ebb58 - ssdeep:
6144:6BxIK3CTW8TMjp41u6nyHwnZb8nuDBDAo2lVqD2hj7kIq5tdWXx:CxIK9V14ImyHYgniAtqD2hjYJ5OXx - TLSH:
T155499E54681C8795FDB8AD1CBE0E261CE454E40C921113E30DA5B93F1773EA3B2FA689 - Submitted as: DumpStack.log.tmp .exe
- File type: pe · Size: 420286 bytes
- Verdict: malicious (99/100) · Family: Krap
Detections (5 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:.lol 1
- ClamAV (daily): Win.Packed.Mira-7330891-0
- Detect It Easy (packer/type): DIE:MinGW
- Microsoft Defender: Trojan:Win32/Krap!pz
- Kaspersky (KVRT): HEUR:Trojan.Win32.Generic
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 8 weighted signals:
- ClamAV (daily) flagged Win.Packed.Mira-7330891-0 (rule
Win.Packed.Mira-7330891-0) - engine signal, weight 0.90, confidence 0.95 - Dropped a malicious payload (Mira): Program Files .exe - dynamic signal, weight 0.62, confidence 0.90
- 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 22 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001 - dynamic signal, weight 0.40, confidence 0.75
- Detect It Easy (packer/type) flagged DIE:MinGW (rule
DIE:MinGW) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: high-entropy-sections:.lol 1, MinGW - static signal, weight 0.25, confidence 0.55
Dynamic analysis (windows)
5825 behavior events · 1 ATT&CK techniques · 34 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- licensing.mp.microsoft.com
- windows.msn.com
- config.edge.skype.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Program Files .exe -
3dd5d654277de3208cb2545260cdf8b7160c6a744126944bb842df27f048e8c0 - C:\inetpub .exe -
6dc9f476578a29cd15135e8353cbe1a0de4339acac8fa2d81b3d49e4362c6860 - C:\ProgramData .exe -
dcbf9ce2f446741bacafb5b9286b07f50adbe8c2f372a4a5b6bd0f80cf6e06c6 - C:\uac.ps1 .exe -
0dbdfb0be16fe7ad958452fd71b3560e38029ce89cbad98fc2d21f4daab16450 - C:\ThreatLens .exe -
8b56ca8b4b41add88263a5b8398b14d46add3d6bfa5cfbcf1428c4d9a731ef4b - C:\788.ini -
8c775c905c1cb49b1c13d52c55f05e376fdb7ebaad5763ea14ed98076ca53917 - C:\uac-done.txt -
ad38b76382f56940b22fc920702dbd4bff308a93bf3ad3b0b705686aa4245e9a - C:\Config.Msi .exe -
e0184b029ef62a19a238a529abb216762c3619f2c3f9aefcaea638b0c5554ca9 - C:\DumpStack.log.tmp .exe -
692418693b587300aa6d318049722eaf97e0aa82389251e64267f0e90139eeeb - C:\Recovery .exe -
d8014efaeb8f9ffa6b72cf6a37bb8feb7b8f2b15d99437cc891a51581093410f - C:\uac.ps1 -
a42e57db93b93ecb2224fdb1276f4ebb0b6705cc4a95ec1899772df8dc47a684 - C:\System Volume Information .exe -
01dc4e3f858192f5ac89c3fbd5d649c96320727a839640bff7d5d273898a75e9 - C:\$WinREAgent .exe -
8996e52b17afdd13531b46e3b225c517e2527831272aef0c04162cb7cd405625 - cb996361e8f6a8fe8ae934381608f73afdbc1a069abc3e20498c84f0f3a3ac14 -
cb996361e8f6a8fe8ae934381608f73afdbc1a069abc3e20498c84f0f3a3ac14 - C:\pagefile.sys .exe -
bbe4e5cb88501f7777d37f1859d3ed7c88ca06941c7998abad536895e2603168
Embedded URLs
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787666942&P2=404&P3=2&P4=GAJMyaObbutDWlx1GgEpJmNPuq%2f%2bCiGdVoawhrPzUFlJ2wINA2vuU%2fvktWBx%2bmdmbtTCG4akxfGaaeTLteMgQw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787666988&P2=404&P3=2&P4=BVsGdAGLnTIY0zwOup52FxXnZiTY72xWA4xXOxi4iPqm6wLpGzYLokbjZC4QNEzFH6CP%2fjrSsIXR1HLA%2bZQ62A%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.184.175.12
- 4.144.132.223
- 52.123.252.227
- 4.144.132.114
- 4.230.171.124
- 48.211.4.16
- 74.179.77.204
- 4.150.223.98
- 74.178.240.51
- 20.231.239.246
- 52.123.128.14
- 52.123.252.195
- 92.223.78.30
- 162.159.142.9
- 135.234.160.245
- 203.26.79.13
- 74.178.76.44
- 52.148.114.188
- 4.150.223.106
- 72.145.35.99
- 52.110.12.55
- 52.110.12.37
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report