23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5

General

Target

23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
Size

59KB
MD5

59d90ea51daa1e7e76572271bec040f0
SHA1

e812b821220d6fd5b0deed06a32295a0f15c772f
SHA256

23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5
SHA512

e63c6c2a5a86d8dfcd20b2e925802af8b33232d0720d974f43e9e8fce19dcceae31ec387506d4a6dd943255c8ebcaf1c8f17ad3a9582e9ced81c63796fe9713b
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQZ:OeodiUO4p13b9HiIeoutuh1aQZ

Score

7^/10

defense_evasion discovery persistence upx

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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	AhnSvc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AhnUpadate = "\"C:\\ProgramData\\AhnLab\\AhnSvc.exe\" /run"	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.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

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3108-0-0x00000000008A0000-0x00000000008C7000-memory.dmp	upx
behavioral2/files/0x0009000000023c2f-4.dat	upx
behavioral2/memory/2480-5-0x0000000000880000-0x00000000008A7000-memory.dmp	upx
behavioral2/memory/3108-8-0x00000000008A0000-0x00000000008C7000-memory.dmp	upx
behavioral2/memory/2480-9-0x0000000000880000-0x00000000008A7000-memory.dmp	upx
behavioral2/memory/2480-10-0x0000000000880000-0x00000000008A7000-memory.dmp	upx

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	AhnSvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
Token: SeDebugPrivilege	2480	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 2480	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	84
PID 3108 wrote to memory of 2480	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	84
PID 3108 wrote to memory of 2480	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	84
PID 3108 wrote to memory of 936	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	86
PID 3108 wrote to memory of 936	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	86
PID 3108 wrote to memory of 936	3108	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	86

C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
"C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Indicator Removal

1

T1070

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
0aa441d3be200f38f217c5298192a8d7

SHA1
11744d4eeb49e2c47736d243d9b2128246fd386a

SHA256
abfe1e025cb0586d3ca26568c033f58938f97875d05805d6c4eb15a352e39b4a

SHA512
9a1c0a23b7762f9b25f63e1ff9b2335508cae2be265131150f97d9e1b6c527000f1d99fd20087f35ea3479de3cbfcf35b9fc1b6e7700dfa1c953022f1ea39a87

Download Submit
memory/2480-5-0x0000000000880000-0x00000000008A7000-memory.dmp

Filesize
156KB

Download
memory/2480-9-0x0000000000880000-0x00000000008A7000-memory.dmp

Filesize
156KB

Download
memory/2480-10-0x0000000000880000-0x00000000008A7000-memory.dmp

Filesize
156KB

Download
memory/3108-0-0x00000000008A0000-0x00000000008C7000-memory.dmp

Filesize
156KB

Download
memory/3108-8-0x00000000008A0000-0x00000000008C7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads