15c9655f9e811cd2accbb5add7aba461bf38be0eef7123a8da33c3deaff9b019

Analysis

max time kernel
160s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 16:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe
Size

102KB
MD5

061769dbccd4acaa8d331379df79600b
SHA1

06249ab5986f8ae1e55d8190852cafbbde41c9fc
SHA256

15c9655f9e811cd2accbb5add7aba461bf38be0eef7123a8da33c3deaff9b019
SHA512

22f69f9d69bb48c504d3382f153d81a1789edce5306aff2784165ea7ad661b5d8728959da79f26e438fb3f2e98eb6e9b7933154db3ab5b3883d69f20d182d9ca
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBr:AnBdOOtEvwDpj6zE

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023213-13.dat	CryptoLocker_rule2
behavioral2/memory/4160-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4312-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023213-13.dat	CryptoLocker_set1
behavioral2/memory/4160-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4312-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0008000000023213-13.dat	UPX
behavioral2/memory/4160-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4312-25-0x0000000000500000-0x000000000050F000-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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4312	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000023213-13.dat	upx
behavioral2/memory/4160-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4312-25-0x0000000000500000-0x000000000050F000-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 4160 wrote to memory of 4312	4160	2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe	83
PID 4160 wrote to memory of 4312	4160	2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe	83
PID 4160 wrote to memory of 4312	4160	2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_061769dbccd4acaa8d331379df79600b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4312

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\asih.exe

Filesize
102KB

MD5
26075dccf46b11ae34dd5e44af2fca42

SHA1
858e8fc3b90afda27a72f688d0737849159501b6

SHA256
0ad55ef88507e22a2abe5ad42493bf167ee108943474dadc11710a9f28c6a331

SHA512
bb981129b559a6f1571593de7d505c83e6ea7e816b25eeef4031c24776251eec8be20250ed4af8c64dd8cecfd29e316c0e87ebe152f11687a84b91b015d45986

Download Submit
memory/4160-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4160-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4160-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4160-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4160-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4312-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download