243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 19:32

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General

Target

243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe
Size

67KB
MD5

75c98370d7198d2bc9109e2fff173018
SHA1

4b6f6789062cb023cbcfbdeb5b414b1b3a1cb876
SHA256

243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78
SHA512

44f836311e39d22138d680939af2219ace24bcd648b4ced65cb2a747753a02e45fcc33c29eba54152f45d4fb96e2a9edb21da0a9d8465986c62829935cff3d60
SSDEEP

1536:EvQoLHjw2iWPKMvw71sMLyXuhcVVVOHHHZN666MvvvvZ:Ev5Ls27BIJsMLyXuhbHHH7666Q

Score

9^/10

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023400-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe

Executes dropped EXE 1 IoCs

pid	Process
380	jkmhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\jkmhost.exe	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe
File opened for modification	C:\Windows\Debug\jkmhost.exe	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.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	468	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 468 wrote to memory of 2956	468	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe	87
PID 468 wrote to memory of 2956	468	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe	87
PID 468 wrote to memory of 2956	468	243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe	87

C:\Users\Admin\AppData\Local\Temp\243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe
"C:\Users\Admin\AppData\Local\Temp\243ee9310fb95b80b9c8d8bcd6eb6e1fd98f8d72eddd74c660ca74557a1d8d78.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\243EE9~1.EXE > nul
  2⤵
  PID:2956

C:\Windows\Debug\jkmhost.exe
C:\Windows\Debug\jkmhost.exe
1⤵
- Executes dropped EXE
PID:380

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
67KB

MD5
b5fc891ae47451aac7e7e2a794c9f0e6

SHA1
4f6a9487a0caf9d36b5aefec1ad09a3c01c333a3

SHA256
e222dcc3e0a40e1a032a15578263949ed4e908b516cf496bad0597a753830a0a

SHA512
10c16f57da25d8d0ce677f258d3aa0efb644f8ec133ef3b6945f148e828947d7b1d633af109e0edb122ccb61e6d2d9c733c16b485abedd9d4c1bd6c9f46777e8

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