084b115221560c1236205ea3c7ce2c3362ca95a8014125d29a92e52630369843

Analysis

max time kernel
140s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 16:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe
Size

68KB
MD5

eecc2fb5e65f67a84f777696b7bf6a19
SHA1

afafb33819c91edb7e80f3250f1cdebc67556dba
SHA256

084b115221560c1236205ea3c7ce2c3362ca95a8014125d29a92e52630369843
SHA512

dfb703fac2035db5fa4519207580dec07e034c108fdd82708717d47cf4d520abc154cb6e63dca435b3e17a2db5e983967dce04653c4cb4f3bfd93aebc0663216
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU9:DW60sllyWOtEvwDpjwF85z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/5048-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023112-13.dat	CryptoLocker_rule2
behavioral2/memory/5048-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/5048-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023112-13.dat	CryptoLocker_set1
behavioral2/memory/5048-25-0x0000000000500000-0x000000000050B000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2428	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 5048 wrote to memory of 2428	5048	2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe	83
PID 5048 wrote to memory of 2428	5048	2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe	83
PID 5048 wrote to memory of 2428	5048	2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_eecc2fb5e65f67a84f777696b7bf6a19_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2428

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
68KB

MD5
a9535b839377bd58632fecdae607e38b

SHA1
5784e845116a8416bcdeb8d43f215e240e53d495

SHA256
a6f3a1e2f599e2cc1a1c1a1b5852ab8e127f4fd1aca490b01f50768a198829f3

SHA512
5629cb71a83a0e7daaf6f0ac362406443725e019cf02c3a6931772712d193b2fcd4a861eae4109c6e3925fbee99779b6e7f6702411fa6fccfb852ace4f8fddd1

Download Submit
memory/2428-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2428-24-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/5048-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5048-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5048-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5048-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/5048-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download