MALICIOUS — fjjrfb.exe
MALICIOUS — fjjrfb.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Dinwod family. 10 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
169953be57f9f3218332419aca8f6a5e413545366cfecaae0a109dbdc6d13f68 - SHA-1:
38ec274626557aef07644e21e5d207b26eede9da - MD5:
cdb2bfc27dfa78f1dd265a37e83cfc35 - imphash:
46c7aa7020cb76df8d87fbfa7b84aca2 - ssdeep:
6144:T3cm4FmowdHoS1JdJEJ5JEJ/JEJ2JvJEJ2J/JEJ2J5JEJ2J7J2JEJ2J7JtJEJ2J4:h4wFHoSMe - TLSH:
T1DD638373F4165ED9CB09B336844A64ED067339BB08ACE1844612E6467ED4FE339B660C - Submitted as: fjjrfb.exe
- File type: pe · Size: 4913709 bytes
- Verdict: malicious (98/100) · Family: Dinwod
Detections (10 of 55 engines)
- YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
- capa (capabilities): capability:collection/keylog
- MalwareAnalyser heuristics (entropy/packer): UPX
- ClamAV (daily): Win.Malware.Dinwod-9828955-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
- Microsoft Defender: Backdoor:MSIL/Bladabindi!pz
- Emsisoft (Emergency Kit): Trojan.Agent.EZHO
- Trellix Stinger (McAfee): Trojan-FPCQ!EE2A74958E59
- Kaspersky (KVRT): Trojan-Dropper.Win32.Dinwod.acqn
MITRE ATT&CK
YARA
- Windows_Injection_Api_Combo
Why this verdict
The malicious score of 98/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Malware.Dinwod-9828955-0 (rule
Win.Malware.Dinwod-9828955-0) - engine signal, weight 0.90, confidence 0.95 - Process injection API combination (rule
Windows_Injection_Api_Combo) - yara signal, weight 0.65, confidence 0.90 - capture keystrokes (rule
capture keystrokes) - capa 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 - YARA: MalwareAnalyser community pack flagged TL_Shellcode_VirtualAlloc_Exec (rule
TL_Shellcode_VirtualAlloc_Exec) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: UPX, high-entropy-sections:UPX1 - static signal, weight 0.25, confidence 0.55
- inject code into another process (rule
inject code into another process) - capa signal, weight 0.12, confidence 0.60
Dynamic analysis
No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report