b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a

Analysis

max time kernel
110s
max time network
94s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
30-11-2024 05:12

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General

Target

b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe
Size

58KB
MD5

7ecd85b616ebf5dcc18ada1d6a544fcf
SHA1

141100ef65e4b76858d4855a588fb11159a53e84
SHA256

b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a
SHA512

4e4492c694b092efb08ec381c70d394e3e1fd080b81bb5dfdd9ae50cdd742d69d125bf05e61060e9560dc9aa1a2eb3834326294fa6fea1739e0cc7e6d118b4e2
SSDEEP

1536:hvQoLHjw2iWPKMvw71/RLyXwvvvZeee5LttttU:hv5Ls27BIJ/RLyXweeeRttttU

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2980	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
380	jaohost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\jaohost.exe	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe
File opened for modification	C:\Windows\Debug\jaohost.exe	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaohost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	jaohost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	jaohost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2296	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2980	2296	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe	31
PID 2296 wrote to memory of 2980	2296	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe	31
PID 2296 wrote to memory of 2980	2296	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe	31
PID 2296 wrote to memory of 2980	2296	b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe	31

C:\Users\Admin\AppData\Local\Temp\b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe
"C:\Users\Admin\AppData\Local\Temp\b6c5b0664ded18971cc6fd6dd47f166cfb33f80bee2f4012a3ee8773077e7f7a.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B6C5B0~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2980

C:\Windows\Debug\jaohost.exe
C:\Windows\Debug\jaohost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\debug\jaohost.exe

Filesize
58KB

MD5
4c992e9b3b4c37632fc26eea0e57568d

SHA1
903f9d3d2894acfb88fc66ad7a1f1f2b72e8459b

SHA256
96ba43c6abeedb16fd38fcca7bcee62500c05d9460d1457f8ce3adfc38aa416e

SHA512
40124591d4361dd14eef99d9671e69df72ebacb61be6d3cde6635212bc7c952a43e612ad82ef4d08b910e86f5940490d4f5b4f65f42632d6f6f8197e9ce82b6d

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