b046b3814f4653af0d36283f04590649d9444f845cff09b5339e77535299fbb8

Analysis

max time kernel
151s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 22:31

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General

Target

2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe
Size

96KB
MD5

a61e41f58450658f5edea9067c8dc00d
SHA1

458a6eaa7f336be6406be60f611255866086740a
SHA256

b046b3814f4653af0d36283f04590649d9444f845cff09b5339e77535299fbb8
SHA512

f9a4c229c9ec72bdd617d7d3006edd9dd097f13bc81fdbbacf270fd083e7c0a3cc56bcc1cea0c1ea712398be268e93afed5707477fbb69820c3b975a86c2981a
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwwO:V6a+pOtEvwDpjtzj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000226fd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000226fd-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	asih.exe

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 1088 wrote to memory of 1988	1088	2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe	89
PID 1088 wrote to memory of 1988	1088	2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe	89
PID 1088 wrote to memory of 1988	1088	2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_a61e41f58450658f5edea9067c8dc00d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1988

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
96KB

MD5
0e0633883df1a1d5cf475595b1d800c6

SHA1
8f3d94eb2eaf41e6b86832ffff93cecd4b47af8d

SHA256
7e3c3c3b3208eb8231671e8b03f75882fd8258302c33bbc3c9320014772f17b7

SHA512
741dd08c10d16918585238102896ba4c24a7b7572548692749a5eadde6f556bd8ad0a777ea42850abc23c9557987a0f3ba8ee3cf68f1342602d4137081d2b052

Download Submit
memory/1088-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1088-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1088-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1988-18-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1988-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download