b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc

Analysis

max time kernel
169s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23/11/2022, 23:59

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General

Target

b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe
Size

112KB
MD5

170e78006aca2135735bc767b4ec9110
SHA1

92c19f852f508e3610b8d15ec7dcf05212b43453
SHA256

b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc
SHA512

f353460fc9dc860baa44e41d158d7b7f00994c453151a9d347640dcb407ab603415fb382933e00ca2b51a76f04cc6bbadee8d8755e695358a6aaafcd89b44a05
SSDEEP

1536:E9wr9DUBQFkQZL2LSkS+yiPmuHS/UWrUuOOJE5fiExEENYaIT8/jyJ:E9wcQmQZgjTHScWrUmJElxEEC6j

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
4640	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4640	tasklist.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
624	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 392	624	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe	83
PID 624 wrote to memory of 392	624	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe	83
PID 624 wrote to memory of 392	624	b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe	83
PID 392 wrote to memory of 4640	392	cmd.exe	85
PID 392 wrote to memory of 4640	392	cmd.exe	85
PID 392 wrote to memory of 4640	392	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe
"C:\Users\Admin\AppData\Local\Temp\b4a2d4f655df89c7c87f1c19f26e7a36ef216f63b2196b1d0dba77bec7aef8bc.exe"
1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c tasklist&&del b4a2d4f655df89c7c87f1c19f26e7a36ef
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:392
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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