60035616e53c079fb271cc7313cc92b3d4b98cedcecc36540ff997cff08b9599

Analysis

max time kernel
149s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 16:46

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General

Target

2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe
Size

126KB
MD5

a7dae5357bcb7f481293ae9ce00505ba
SHA1

77ff2fc0cc9a0b2d96491601fe77d7870f74e638
SHA256

60035616e53c079fb271cc7313cc92b3d4b98cedcecc36540ff997cff08b9599
SHA512

0c184dacda8ef0b380bacca5ae152b49b3ff5a4e49514c541b96139c0ecb5ef67095e65fe2f46cb09d2082162eae4f435cc968fccaaccf961f85fcefc7b51863
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eL:AnBdOOtEvwDpj6zh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023205-13.dat	CryptoLocker_rule2
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2448-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023205-13.dat	CryptoLocker_set1
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2448-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0007000000023205-13.dat	UPX
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2448-26-0x0000000000500000-0x000000000050F000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2448	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0007000000023205-13.dat	upx
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2448-26-0x0000000000500000-0x000000000050F000-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 3484 wrote to memory of 2448	3484	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	84
PID 3484 wrote to memory of 2448	3484	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	84
PID 3484 wrote to memory of 2448	3484	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2448

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\asih.exe

Filesize
126KB

MD5
2616d1703903f5bbbb0a583888f2eb70

SHA1
ea47a93e724b5bf19e87b8017ac572be97854847

SHA256
a08ca8537a122741dc9cf5c16bd0d947b9cb898fbc5264d968bc4fd79ff51bf6

SHA512
83b4b6012c04481f67cf27f07d587f4e238602ead956f8d7a0b3f3237fb1bf7b05f1432d03c3eda1c549cf02c3f8e8fa864fea06e23263dac758a279e1602a62

Download Submit
memory/2448-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2448-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2448-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3484-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3484-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3484-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3484-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3484-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download