988060c8f79cde4b66446e69d5bea1d40a07a7c3cf62f066a4450613c947d3f1

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 10:52

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General

Target

2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe
Size

51KB
MD5

acb78140c855f393ada01ed80a9a3373
SHA1

23fdfafed17c112f04ccd6eee9e7c6026462d6ee
SHA256

988060c8f79cde4b66446e69d5bea1d40a07a7c3cf62f066a4450613c947d3f1
SHA512

a973ff8e2a120f98c4a6f6bc585ad15dd32b790eff098efed453030600e91c0f5da411a46cd104e32970e6fbdbadd586ebc35dcae92e5e741fe9ef8b69f28fb2
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojkRaJ:V6a+pOtEvwDpjQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320b-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4084	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 5004 wrote to memory of 4084	5004	2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe	87
PID 5004 wrote to memory of 4084	5004	2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe	87
PID 5004 wrote to memory of 4084	5004	2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_acb78140c855f393ada01ed80a9a3373_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4084

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
51KB

MD5
cdb6ac3d1da6b4cc30160b1e35138d6f

SHA1
fadc0506fd1a72d4570e60a334066da6a8cfbefa

SHA256
f77a9a977e121cf4c8ed54f5439aa1187bb39b813b84161675597c5142cd1b5b

SHA512
cc0c6ea6dca047198acb3ee18de161fbc80e0b4ff04af482acc438f2fcdb82da9e28093d4794029d1e84aafb83dca43fda993688a3587480cc607260250c04cf

Download Submit
memory/4084-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4084-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5004-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5004-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5004-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download