e2b893b389bab1b067083b50357b933c6baa962625f01927a9deb8f2230a3349

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 14:23

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General

Target

2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe
Size

43KB
MD5

10bb13db1dd4d26951c25eca49643ad9
SHA1

03554e5df935a06bf73496e715f3e2bb7fad8f12
SHA256

e2b893b389bab1b067083b50357b933c6baa962625f01927a9deb8f2230a3349
SHA512

ee253698cfa70bb0294c8222cbc183dfd6afb5f9b4b93c417054255d885cb4c90160aa6e07a33e5bd75207699bd41b0faf76e65bf24cb5d25ddcc618931b06ed
SSDEEP

768:CHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhqb:GGzl5wjRQBBOsP1QMOtEvwDpjl39+D+D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4280-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/4280-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4280-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_set1
behavioral2/memory/4280-17-0x0000000000500000-0x000000000050B000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1744	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 4280 wrote to memory of 1744	4280	2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe	88
PID 4280 wrote to memory of 1744	4280	2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe	88
PID 4280 wrote to memory of 1744	4280	2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_10bb13db1dd4d26951c25eca49643ad9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1744

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
43KB

MD5
491f100b3bfd930f1613d08a5683af8b

SHA1
a37d1e8e0653a176b6b00ce8cbfc89ea9f5a342e

SHA256
a77d988e3ba8708e4a5ad64eac456a0d72b42b0d8ec91a50e632023b41ec929c

SHA512
efba0028b0ea218aea13c3e4a60213bbf6d11a9e772b04a46ca686a84c89fa38ccf496408a461d2960c263f3c650cd8e3780e19f0989e241d3b2f80275b03613

Download Submit
memory/1744-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1744-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4280-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4280-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4280-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4280-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4280-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download