5e230fc4a6c99fa50bc42f3928545f5bc131d1ac0970f11c4aec1e3ef5400bda

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 23:51

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General

Target

2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe
Size

43KB
MD5

320a3d397d64372fe8141577d7f9388c
SHA1

d1be2e259884c68a7c4237337bd24458cb47d523
SHA256

5e230fc4a6c99fa50bc42f3928545f5bc131d1ac0970f11c4aec1e3ef5400bda
SHA512

9a6594e3f3b33b32c2244a300499e55bb51c8d5a835732065dc75bd2eebf354b89d5eb836b297184aa9fa9ea0cfefc93003a9c293f1fbb7501111a4feedbf772
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUkn:bm74zYcgT/EkM0ryfjvn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/116-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023418-13.dat	CryptoLocker_rule2
behavioral2/memory/116-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2220-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	hasfj.exe

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 116 wrote to memory of 2220	116	2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe	84
PID 116 wrote to memory of 2220	116	2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe	84
PID 116 wrote to memory of 2220	116	2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_320a3d397d64372fe8141577d7f9388c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:116
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2220

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
43KB

MD5
f6fa1bc806fdba055ebeb352f3b25a6a

SHA1
efba58c342a2b578e4da2099bc9402fbc601847a

SHA256
14525074cb7fec860fd18ebf4a1b7fbb8b7c16f91887e83d5a2fc91997a394af

SHA512
8790355fdee0fd45c2b54006f440b5678f2383b9da7f5efe61dc3f463d5da62b719b5a6f5685b69e1ea991654e60c9cf08b91ac8db3cf26f9ad4eba8f2edc5e6

Download Submit
memory/116-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/116-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/116-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/116-9-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/116-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2220-19-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2220-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2220-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download