c6f2280a9e681b3bb5ba868678d46fda7eab1822a9f7cbb261ebb49b4654b62a

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 06:27

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General

Target

2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe
Size

24KB
MD5

0f45af4590dec637602d6a0cfe40d9ff
SHA1

d9d3c7e85d4c932c4f3111dc1531e79e6b47c747
SHA256

c6f2280a9e681b3bb5ba868678d46fda7eab1822a9f7cbb261ebb49b4654b62a
SHA512

681e4914d52dce8bf9303201cb5dfeb5b68ac75929b76e1ede658204d56b059c9382f3b4f98bd2fcb8935733bda5a0d6bd7c9668d1ac69102aab9232d1b96055
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ2AM:bVCPwFRo6CpwXFXSqQXfjAsJY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2996-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000022fa8-13.dat	CryptoLocker_rule2
behavioral2/memory/2996-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/624-26-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2996-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x0006000000022fa8-13.dat	UPX
behavioral2/memory/2996-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/624-26-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
624	hasfj.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2996-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x0006000000022fa8-13.dat	upx
behavioral2/memory/2996-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/624-26-0x0000000008000000-0x000000000800E000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 624	2996	2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe	81
PID 2996 wrote to memory of 624	2996	2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe	81
PID 2996 wrote to memory of 624	2996	2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_0f45af4590dec637602d6a0cfe40d9ff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:624

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
24KB

MD5
c660cd5ab22527bd8a945eb16747fe22

SHA1
0b8dd487fb333b073ddccbd7a5bdb86f4c495937

SHA256
d1e9f8db88cd0704211a6d0833b187393afde1b8bba269a05f18e764cc62612f

SHA512
06c2014dfe2f6ce63440ea13546f07e2debce74bf6a24a05929504f625474fdd674b020a230802779da88134d680ce758d4ee04511c7226a561277dae27d6dc1

Download Submit
memory/624-19-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/624-25-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/624-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2996-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2996-1-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2996-2-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/2996-9-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2996-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download