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

Deletes itself 1 IoCs

pid	Process
1860	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	AhnSvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2736-0-0x0000000000920000-0x0000000000947000-memory.dmp	upx
behavioral1/files/0x0008000000015baa-2.dat	upx
behavioral1/memory/2716-11-0x0000000001010000-0x0000000001037000-memory.dmp	upx
behavioral1/memory/2736-15-0x0000000000920000-0x0000000000947000-memory.dmp	upx
behavioral1/memory/2716-17-0x0000000001010000-0x0000000001037000-memory.dmp	upx
behavioral1/memory/2716-21-0x0000000001010000-0x0000000001037000-memory.dmp	upx
behavioral1/memory/2736-25-0x0000000000920000-0x0000000000947000-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 2 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	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
Token: SeDebugPrivilege	2716	AhnSvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2716	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	30
PID 2736 wrote to memory of 2716	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	30
PID 2736 wrote to memory of 2716	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	30
PID 2736 wrote to memory of 2716	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	30
PID 2736 wrote to memory of 1860	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	32
PID 2736 wrote to memory of 1860	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	32
PID 2736 wrote to memory of 1860	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	32
PID 2736 wrote to memory of 1860	2736	23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe	32

C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe
"C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\23fbc67567631678f13c94abd4a5de926662e5ba9de24cdd1076f628af1a82b5N.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1860

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
643401797c06a4f7b873c011eeb56515

SHA1
e85388d1ec706125548c784aef2e5b1519d05b72

SHA256
c87ddd075f9764ad3394cf575b43c80fb2e6879214a8396175630d70e8bf2d0b

SHA512
a4d637f4649287550a348d694acbb9ce3e4c31639f6c521b2884937290b7bb623fe8709f61c8d29c122021562d56f80ca3a3de387bac43bd0a03f00a57cfe89e

Download Submit
memory/2716-11-0x0000000001010000-0x0000000001037000-memory.dmp

Filesize
156KB

Download
memory/2716-17-0x0000000001010000-0x0000000001037000-memory.dmp

Filesize
156KB

Download
memory/2716-21-0x0000000001010000-0x0000000001037000-memory.dmp

Filesize
156KB

Download
memory/2736-0-0x0000000000920000-0x0000000000947000-memory.dmp

Filesize
156KB

Download
memory/2736-9-0x0000000000170000-0x0000000000197000-memory.dmp

Filesize
156KB

Download
memory/2736-10-0x0000000000170000-0x0000000000197000-memory.dmp

Filesize
156KB

Download
memory/2736-15-0x0000000000920000-0x0000000000947000-memory.dmp

Filesize
156KB

Download
memory/2736-16-0x0000000000170000-0x0000000000197000-memory.dmp

Filesize
156KB

Download
memory/2736-25-0x0000000000920000-0x0000000000947000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads