430cffda6cd34eeba10b42efee1c71c420cee2a92729698021f0dad2a7517245

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 09:59

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General

Target

2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe
Size

64KB
MD5

16011ecaee6b59fb41f58a3225ccce1c
SHA1

0da725c5d815e546c8dfd03bf526ed8a707943bf
SHA256

430cffda6cd34eeba10b42efee1c71c420cee2a92729698021f0dad2a7517245
SHA512

8be4b214fad69d2b93ec37a9445a23beedac141805bc0c02f93c696ddc387c025c32972285bb25b150095c6c533b4397dbcbbc4b11cbc427ebf77d1cc6d550de
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6UU:1nK6a+qdOOtEvwDpjR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000001e5df-13.dat	CryptoLocker_rule2
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3064-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000001e5df-13.dat	CryptoLocker_set1
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3064-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000600000001e5df-13.dat	UPX
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3064-26-0x0000000000500000-0x000000000050F311-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3064	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000600000001e5df-13.dat	upx
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3064-26-0x0000000000500000-0x000000000050F311-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 4956 wrote to memory of 3064	4956	2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe	88
PID 4956 wrote to memory of 3064	4956	2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe	88
PID 4956 wrote to memory of 3064	4956	2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_16011ecaee6b59fb41f58a3225ccce1c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3064

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
64KB

MD5
f56e963767ec0223b1fbf2c9f3b4acb0

SHA1
85504592a684db3d14780e60e4574ebe06d64b1e

SHA256
ff0d9227bcbdbf1034fe56969ddfdf313ee096e1b63a10ab661a11e88753df79

SHA512
919a5ee37d7c6eb7634f95d5ee0da6ea22d1b85eb3cf91934e0f2799ac9b5798572f091f3f68ce4e1873d29bccf3436b48468140beab9fee1cf8748b210be2f2

Download Submit
memory/3064-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3064-22-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3064-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4956-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4956-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4956-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4956-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4956-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download