3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23

General

Target

3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
Size

59KB
MD5

7f1856d83f9bc9d1bf36c0d3ea29b50f
SHA1

6e90da468567c85c61d6633886ec2febf5ae497e
SHA256

3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23
SHA512

b15550a156f17cb38c44ed9c37ac1ac924e6f716af3f1b20cd9fbfd2850593269084133520f2b864c8d2dcf05fc68c66e2bd1445ec8900aa9012793c3e5e4194
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQC:OeodiUO4p13b9HiIeoutuh1aQC

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2944	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2140	AhnSvc.exe

Loads dropped DLL 2 IoCs

pid	Process
804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/804-0-0x0000000000D60000-0x0000000000D87000-memory.dmp	upx
behavioral1/files/0x000700000001867d-2.dat	upx
behavioral1/memory/2140-11-0x00000000002B0000-0x00000000002D7000-memory.dmp	upx
behavioral1/memory/804-15-0x0000000000D60000-0x0000000000D87000-memory.dmp	upx
behavioral1/memory/2140-16-0x00000000002B0000-0x00000000002D7000-memory.dmp	upx
behavioral1/memory/2140-22-0x00000000002B0000-0x00000000002D7000-memory.dmp	upx
behavioral1/memory/804-24-0x0000000000D60000-0x0000000000D87000-memory.dmp	upx

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"	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.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

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
Token: SeDebugPrivilege	2140	AhnSvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 2140	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	30
PID 804 wrote to memory of 2140	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	30
PID 804 wrote to memory of 2140	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	30
PID 804 wrote to memory of 2140	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	30
PID 804 wrote to memory of 2944	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	32
PID 804 wrote to memory of 2944	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	32
PID 804 wrote to memory of 2944	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	32
PID 804 wrote to memory of 2944	804	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	32

C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
"C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.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:804
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2944

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
ff01c58ae6cccc36a9f086e3393b7d62

SHA1
0e0cb44a000f258690fcb18d68e6ced88ec6a9c1

SHA256
0940b25e64c9d833acabca1dbfad2c22abd970dd20e43e712aed6a6a11682f2d

SHA512
819075b5c290a420afdff14b77b5d6efb8779fb904032982aed5655029b91ce25f77a6f619eb960a80853d7aa2802b43ae4a4a40167642afa8ee825f7d52d0e2

Download Submit
memory/804-0-0x0000000000D60000-0x0000000000D87000-memory.dmp

Filesize
156KB

Download
memory/804-10-0x0000000000190000-0x00000000001B7000-memory.dmp

Filesize
156KB

Download
memory/804-9-0x0000000000190000-0x00000000001B7000-memory.dmp

Filesize
156KB

Download
memory/804-15-0x0000000000D60000-0x0000000000D87000-memory.dmp

Filesize
156KB

Download
memory/804-24-0x0000000000D60000-0x0000000000D87000-memory.dmp

Filesize
156KB

Download
memory/2140-11-0x00000000002B0000-0x00000000002D7000-memory.dmp

Filesize
156KB

Download
memory/2140-16-0x00000000002B0000-0x00000000002D7000-memory.dmp

Filesize
156KB

Download
memory/2140-22-0x00000000002B0000-0x00000000002D7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads