d813c2471299fcfec4acb556ffa8ccee4402ed772eef438f4e59dcb223b5a4f2

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05-06-2024 03:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe
Size

35KB
MD5

202fe57fbe6f3ebb4ed7fcdcc570d588
SHA1

1abf1fe40360ba81bd9fe6e53c6a73fb203e548d
SHA256

d813c2471299fcfec4acb556ffa8ccee4402ed772eef438f4e59dcb223b5a4f2
SHA512

25edd9c1cfc616ea8a2fe09496f03b2e4eb3dbc67c6ae9e2c467e0ea7f52e619b6fb6b556aed74b0988069ad6f02fe6c29f7d51ad88690f74cf0b623190d72ac
SSDEEP

768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvtXsl:bFPmpiif/oc+vXsl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3572-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000500000002326f-13.dat	CryptoLocker_rule2
behavioral2/memory/3572-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2720-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3572-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000500000002326f-13.dat	UPX
behavioral2/memory/3572-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/2720-27-0x0000000008000000-0x000000000800E000-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3572-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000500000002326f-13.dat	upx
behavioral2/memory/3572-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/2720-27-0x0000000008000000-0x000000000800E000-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 3572 wrote to memory of 2720	3572	2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe	82
PID 3572 wrote to memory of 2720	3572	2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe	82
PID 3572 wrote to memory of 2720	3572	2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_202fe57fbe6f3ebb4ed7fcdcc570d588_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3572
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2720

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

Loading Replay Monitor...

Downloads

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

Filesize
35KB

MD5
821467c5cece5098d4c6548a13ddc4e1

SHA1
a16e72fb9a54f24c4236a04d7f068c3ebef8fefa

SHA256
0438440f75101ac99fe9353e61d221278a3a3ea4d666e90aeee17c5910e4895b

SHA512
c931a14651b7b3e1cf1f4108418f2659699d96caf1e3ed7fcce0d5950b7b6ffcb85012298b0bbd0ccb42ee5a2a695c22674db9bff321e2f8cf19b1c2db6ace29

Download Submit
memory/2720-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2720-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2720-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3572-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3572-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3572-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3572-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3572-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download