0639573e0b3c0ad553fd3f30d51d7819ecd039f38eedf04a348ab36f0c525b9a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 20:22

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General

Target

2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe
Size

55KB
MD5

f6cdc7f8335d04ad1bb5b95c0a0d5038
SHA1

78c043a9c65def73475b36d3917171a99dd14f4b
SHA256

0639573e0b3c0ad553fd3f30d51d7819ecd039f38eedf04a348ab36f0c525b9a
SHA512

9978d3c976e604eb82326b5cec50caafca80f931c3b7fe8aac340ad84a86b68e3c08005950bfe423eec802e0c6fee3050a7e61b9a69bbf1c26977b7ad1232660
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj31ik/9+D:z6a+CdOOtEvwDpjg

Score

7^/10

discovery 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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2056	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/716-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233f3-13.dat	upx
behavioral2/memory/716-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2056-26-0x0000000000500000-0x0000000000510000-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	2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 716 wrote to memory of 2056	716	2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe	84
PID 716 wrote to memory of 2056	716	2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe	84
PID 716 wrote to memory of 2056	716	2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_f6cdc7f8335d04ad1bb5b95c0a0d5038_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
55KB

MD5
2fdfdccfbae66726551950065fdfde96

SHA1
e3d8528d9a9a70b31ac8b0c382fee1d1c0059522

SHA256
7a7f3bf160d92453c6d99863444df35bf96490634b046330d0122d632dccdb1c

SHA512
787194f300762e874baa18bef4d0d877c62449d5cf3531cc887892badf07981350fd4033165e1452f3e9239dbddb2b58f9b82fd312b6197b78bbb082f6dc2916

Download Submit
memory/716-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/716-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/716-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/716-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/716-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2056-19-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/2056-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2056-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download