31a3b7f38a242a44673bfe21f519494f726a8f308d109ef6ce1938f97536dea2

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 21:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe
Size

48KB
MD5

d959b0da16c0a66caa2ab5e0437792ba
SHA1

1ef431b36ddca16f1cc76d88d3be48bc0b9ecb1d
SHA256

31a3b7f38a242a44673bfe21f519494f726a8f308d109ef6ce1938f97536dea2
SHA512

1f75b321d98d6324bd08eac71cc515e44c8287d5274600910d872319b6efc0fa206bbfac37a36524eea8ee16f3e3334bf93016490e30f3314ad45058e51a4d97
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcg:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3144-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3144-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1932-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1932-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3144-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3144-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1932-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1932-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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

Processes:

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1932 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1932	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

description	pid	process	target process
PID 3144 wrote to memory of 1932	3144	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe
PID 3144 wrote to memory of 1932	3144	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe
PID 3144 wrote to memory of 1932	3144	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3144

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1932

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
48KB

MD5
aecc839be1907dbf4716bfc7d7a11e0f

SHA1
2878e4eba779e01bb26291f994c98f387fc90b2a

SHA256
d0fb95fa134f7c122020ceb18d28bb3ea96517fa4d0fd7a729bbf2e2282eecf6

SHA512
c14398ae12ed45ba97a0c311d6ff14c22241fc7b95a17849c149131b6f0c08311d9c68c717455a5378bc4eb9e312723a2a48568d6ecd6842c4e5896c5d263890

Download Submit
memory/1932-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1932-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1932-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1932-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3144-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3144-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3144-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3144-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3144-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download