c281edbcf4d90093063794de02d2b3bad397eea3d977ff98307de773dc54b425

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 10:44

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General

Target

2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe
Size

71KB
MD5

0af184dc6d2b5c1a1ea944d7d635fb3b
SHA1

738aec0b7c6fa6186264b082f543d22c64046f18
SHA256

c281edbcf4d90093063794de02d2b3bad397eea3d977ff98307de773dc54b425
SHA512

fc86d679f9138cd8171f33642ff27edf381163c18997ebfc7fcd058f4b9d77b2d7ff218e2b3e892f09a6f8ca07896fe419cb31b06c370455cae33aa4e48580b8
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZO2:DW60sllyWOtEvwDpjwF85V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3440-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002343c-13.dat	CryptoLocker_rule2
behavioral2/memory/3440-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3460-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3440-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002343c-13.dat	CryptoLocker_set1
behavioral2/memory/3440-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3460-18-0x0000000000500000-0x000000000050B000-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3460	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 3440 wrote to memory of 3460	3440	2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe	81
PID 3440 wrote to memory of 3460	3440	2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe	81
PID 3440 wrote to memory of 3460	3440	2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_0af184dc6d2b5c1a1ea944d7d635fb3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3460

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
71KB

MD5
c2da6cf1642b26c9e4eaa04706a7010e

SHA1
3dfe72657331d8a4de8748f2722592bb61cb1ae7

SHA256
3ca6e8320fca4cd2ef3241aee5a678d33c26f800a0d788641d0deda50cbecb0f

SHA512
b79fd7b059b4525e7e7ab72544a8f9c517920ead0f59dd1960868d28e0b7b13b99354ba560ab6b7f71c67f4d8248ea97da23cc233de8c315ee3343d66504d4da

Download Submit
memory/3440-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3440-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3440-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3440-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3460-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3460-20-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/3460-26-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download