32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6d

General

Target

32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe
Size

38KB
MD5

f149768634bc97725c0bcef7b4976f40
SHA1

ad9193c31cbe5114429130b20e2c016ebd93a852
SHA256

32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6d
SHA512

5bead3cbdde9179107e8bc0a58f1ac40bca508d9f13ab0eb58d84729d262324cbe8ef37dc501bb3be7f12193328e6133391f712d7a98a27a3b44a83f33eafab9
SSDEEP

768:Nzj1JegVa3Gry+uELEmITCs/NUZ6nZdYbCLECkrQoP9fmF2f1cE4:NWQa2TLEmITcoQxfllfmS1c1

Score

8^/10

discovery evasion execution upx

Malware Config

Signatures

Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
4808	smss.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2564-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x00070000000236d2-5.dat	upx
behavioral2/memory/2564-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/4808-13-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2032	sc.exe
2412	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe
4808	smss.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2564 wrote to memory of 2032	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	89
PID 2564 wrote to memory of 2032	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	89
PID 2564 wrote to memory of 2032	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	89
PID 2564 wrote to memory of 4808	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	91
PID 2564 wrote to memory of 4808	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	91
PID 2564 wrote to memory of 4808	2564	32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe	91
PID 4808 wrote to memory of 2412	4808	smss.exe	92
PID 4808 wrote to memory of 2412	4808	smss.exe	92
PID 4808 wrote to memory of 2412	4808	smss.exe	92

C:\Users\Admin\AppData\Local\Temp\32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe
"C:\Users\Admin\AppData\Local\Temp\32a08b587f9ca8638ab8e2ccf72c0763bd45a73c9b32d07066cf62a2e94f1b6dN.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2564
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2032
- C:\Windows\SysWOW64\1230\smss.exe
  C:\Windows\system32\1230\smss.exe -d
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4808
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:2412

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4056,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4300 /prefetch:8
1⤵
PID:64

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1

T1489

Replay Monitor

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Downloads

C:\Windows\SysWOW64\1230\smss.exe

Filesize
38KB

MD5
2d9fe45e88a0bb2ab2056bf0cc24ce11

SHA1
2c32f811899e5497f9e02aa4fce3de1c0b02c189

SHA256
724d1340c3b7e4d50dfb320eaefcee0d9ba34827ea721af5087de7744707d126

SHA512
53b320fd6a7de0797dc237826ba19d5a61d1630a226b69b10a6c4df16f0448da3f8b7441eb02d08c38ea8661550fa717927bafe669017ca14657ad34ec970604

Download Submit
memory/2564-0-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2564-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4808-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

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