MALICIOUS — GrayFish_9B1CA66AAB784DC5F1DFE635D8F8A904
MALICIOUS — GrayFish_9B1CA66AAB784DC5F1DFE635D8F8A904 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Fetrog family. 7 of 51 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
df4bbd02dcd8b8b9e1374c6f71f2e2da8518d39337b35983874266e8fff055e1 - SHA-1:
58d15d1581f32f36542f3e9fb4b1fc84d2a6ba35 - MD5:
9b1ca66aab784dc5f1dfe635d8f8a904 - imphash:
35282f2a6887e3b2d79f90b4c1c2e128 - ssdeep:
12288:x7vfNl2A3kJLnaGiRid/3E+z7z+KeF9SQmdvMAVPMR0YSN5s:x7nXgaXkc+z7SHF9Sj+3u5s - TLSH:
T1C74D0154C505B248FFE74624BE597D4CE053D4A8A1B647DD9380CA7ECEC38AB62234B8 - Submitted as: GrayFish_9B1CA66AAB784DC5F1DFE635D8F8A904
- File type: pe · Size: 573440 bytes
- Verdict: malicious (100/100) · Family: Fetrog
Detections (7 of 51 engines)
- MalwareAnalyser heuristics (entropy/packer): Microsoft Linker
- ClamAV (daily): {MD5}bin.trojan.agent.7543.UNOFFICIAL
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Cyble Vision: Cyble Vision: Malicious
- Detect It Easy (packer/type): DIE:Microsoft Linker
- Microsoft Defender: TrojanDropper:Win32/Fetrog.A
- Emsisoft (Emergency Kit): Trojan.Agent.BHVN
MITRE ATT&CK
Why this verdict
The malicious score of 100/100 is the fusion of 9 weighted signals:
- ClamAV (daily) flagged {MD5}bin.trojan.agent.7543.UNOFFICIAL (rule
{MD5}bin.trojan.agent.7543.UNOFFICIAL) - engine signal, weight 0.90, confidence 0.95 - Cyble Vision flagged Cyble Vision: Malicious (rule
Cyble Vision: Malicious) - engine signal, weight 0.90, confidence 0.95 - Microsoft Defender flagged TrojanDropper:Win32/Fetrog.A (rule
TrojanDropper:Win32/Fetrog.A) - engine signal, weight 0.55, confidence 0.85 - Emsisoft (Emergency Kit) flagged Trojan.Agent.BHVN (rule
Trojan.Agent.BHVN) - engine signal, weight 0.55, confidence 0.85 - Contacted 27 external host(s) at runtime (11 HTTP) - network signal, weight 0.40, confidence 0.80
- YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule
DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: Microsoft Linker - static signal, weight 0.25, confidence 0.55
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
113 behavior events · 1 ATT&CK techniques · 2 dropped files.
Runtime network
- www.msftconnecttest.com
- www.bing.com
- officeclient.microsoft.com
- v20.events.data.microsoft.com
- ctldl.windowsupdate.com
- ocsp.digicert.com
- oneocsp.microsoft.com
- odc.officeapps.live.com
- v10.events.data.microsoft.com
- edge.microsoft.com
- aps.prod.windows.com
- desktop-hsgcbep
- dns.msftncsi.com
- tas02.sls.update.microsoft.com
- fe3cr.delivery.mp.microsoft.com
- slscr.update.microsoft.com
- msedge.b.tlu.dl.delivery.mp.microsoft.com
- watson.events.data.microsoft.com
- fs.microsoft.com
- ecs.office.com
Dropped files
- /opt/CAPEv2/storage/analyses/4797/files/577908451ade2909a98f135205bb230a882870a192375a9a26a7ae8768cad641 -
577908451ade2909a98f135205bb230a882870a192375a9a26a7ae8768cad641 - 5782c592d82c3f1d57ab1599112983403839a4f38e0a3b86fdef1b470995bdae -
5782c592d82c3f1d57ab1599112983403839a4f38e0a3b86fdef1b470995bdae
Embedded URLs
- http://www.msftconnecttest.com/connecttest.txt
Embedded domains
- oneclient.sfx.ms
Embedded IP addresses
- 23.33.238.103
- 20.42.73.26
- 20.50.201.204
- 150.171.27.11
- 23.40.52.209
- 74.178.240.61
- 20.184.175.6
- 135.233.95.135
- 135.233.95.144
- 151.101.30.172
- 52.110.12.18
- 52.110.12.33
- 23.40.52.123
- 135.233.45.221
- 204.79.197.203
- 23.40.52.211
- 150.171.109.25
- 52.123.129.14
- 23.214.54.132
- 23.11.37.157
- 150.171.109.17
- 131.253.33.203
- 20.50.73.15
- 23.40.52.148
- 52.110.12.38
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report