a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69

Analysis

max time kernel
141s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 20:17

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General

Target

a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe
Size

198KB
MD5

bb90e2e55198bb82b96b6aa129626a7d
SHA1

f2225dc69cc8f05c938beede8cb3256619f17f1f
SHA256

a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69
SHA512

63fe2e2c0d392bb8bd666c559dc0efd7f35eb39ddd110ad19221876612cac57a7379af03714df295093ccbdcbf49a1a23689651809e8373bd2aba1c1030e6f77
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOE:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXl

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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe

Executes dropped EXE 1 IoCs

pid	Process
1964	jkmhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\jkmhost.exe	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe
File opened for modification	C:\Windows\Debug\jkmhost.exe	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5004	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 1396	5004	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe	88
PID 5004 wrote to memory of 1396	5004	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe	88
PID 5004 wrote to memory of 1396	5004	a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe	88

C:\Users\Admin\AppData\Local\Temp\a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe
"C:\Users\Admin\AppData\Local\Temp\a3bd5e5538c1d97608d726deec76249cbec22962b6c86f6b727c7b5222ed0c69.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A3BD5E~1.EXE > nul
  2⤵
  PID:1396

C:\Windows\Debug\jkmhost.exe
C:\Windows\Debug\jkmhost.exe
1⤵
- Executes dropped EXE
PID:1964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\debug\jkmhost.exe

Filesize
198KB

MD5
f00a7a862237b2249e7ca9976b96bd90

SHA1
56984451c2e8a3fcdbd1a545d980344ec3755041

SHA256
39f7543c337d7f4908de31907e9da404a8447da53c1a06db131d0e8b3876bf0d

SHA512
f7d1ff02608e5c8536c3884cae36bb807adbcb343b21d8888e3c5a3b8d1633025fd294049fa2f1f294150fb50f38304ef102b29cb7caf25b4f0f0ea679d49f0d

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