MALICIOUS — c95de5c07ba2511287531a216da0e01ae0a40d8ace97b565277d16d7c0bf87d6

MALICIOUS — c95de5c07ba2511287531a216da0e01ae0a40d8ace97b565277d16d7c0bf87d6 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Agentb family. 8 of 56 detection engines flagged it, exhibiting 6 ATT&CK techniques.

Identification

SHA-256: c95de5c07ba2511287531a216da0e01ae0a40d8ace97b565277d16d7c0bf87d6
SHA-1: 227c770e0c9424d396341660f03c04417abf1add
MD5: ab9bec116bdef26e82d6b2853e1f56a6
imphash: 8b1fc5c989964e6fc1675250748f63dc
ssdeep: 49152:dzvKfNuIhakf8V8ySK+JLoUvgJzvKfNuIhakf8V8ySK+JLoUvJOyCPO:dzMcOe8hK+JLwJzMcOe8hK+JLUPO
TLSH: T1D66408CF961F3332C6A1CA1D6505A18D64657CB0D02E3F5C08EAB2F64CE1567BE2906B
Submitted as: c95de5c07ba2511287531a216da0e01ae0a40d8ace97b565277d16d7c0bf87d6
File type: pe · Size: 5270213 bytes
Verdict: malicious (100/100) · Family: Agentb

Detections (8 of 56 engines)

YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
capa (capabilities): capability:credential-access
ClamAV (daily): Win.Virus.Memery-6732853-0
YARA: delivr.to detections: DLV_ISO_IMG_Container_Lure
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
YARA: Yara-Rules community: YR_AntiDebug_Checks
Kaspersky (KVRT): HEUR:Trojan.Win32.Agentb.gen

MITRE ATT&CK

YARA

Windows_Injection_Api_Combo

Why this verdict

The malicious score of 100/100 is the fusion of 17 weighted signals:

ClamAV (daily) flagged Win.Virus.Memery-6732853-0 (rule Win.Virus.Memery-6732853-0) - 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
Kaspersky (KVRT) flagged HEUR:Trojan.Win32.Agentb.gen (rule HEUR:Trojan.Win32.Agentb.gen) - engine signal, weight 0.55, confidence 0.85
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
access stored credentials (rule access stored credentials) - capa signal, weight 0.50, confidence 0.80
YARA: delivr.to detections flagged DLV_ISO_IMG_Container_Lure (rule DLV_ISO_IMG_Container_Lure) - engine signal, weight 0.55, confidence 0.70
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 4 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70
YARA: MalwareAnalyser built-in flagged Windows_Injection_Api_Combo (rule Windows_Injection_Api_Combo) - engine signal, weight 0.35, confidence 0.70
capa (capabilities) flagged capability:credential-access (rule capability:credential-access) - engine signal, weight 0.35, confidence 0.70
persist via registry run key (rule persist via registry run key) - capa signal, weight 0.35, confidence 0.60
YARA: MalwareAnalyser community pack flagged TL_Shellcode_VirtualAlloc_Exec (rule TL_Shellcode_VirtualAlloc_Exec) - engine signal, weight 0.30, confidence 0.70
enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60
inject code into another process (rule inject code into another process) - capa signal, weight 0.12, confidence 0.60
Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. process hidden from a listing (rule windows.psxview.PsXView) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

0 behavior events · 0 ATT&CK techniques · 0 dropped files.

Embedded URLs

http://go.microsoft.com/fwlink/?LinkId=131738
http://www.microsoft.com/pki/certs/CSPCA.crt0
http://www.microsoft.com/pki/certs/tspca.crt0
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

go.microsoft.com
crl.microsoft.com
www.microsoft.com

Embedded IP addresses

4.150.223.102
4.230.171.124
85.210.196.11
20.247.185.124
57.155.101.212
135.232.92.97
20.42.65.84
74.178.240.61
4.150.223.110
104.18.33.89
172.66.2.5
52.110.12.25
52.110.12.30

File paths

f:\dd\Tools\devdiv\finalpublickey.snk
C:\cuckoo_%d.ini

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report