681dbe8e4c750fce40053bb1281a42696a0ef86a03b7f2ec92337ef739a69cb8

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 19:01

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General

Target

2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe
Size

48KB
MD5

de6c2325b85f4f86a82a2151f01794bf
SHA1

69ab5c1b76637312d4c16a337d9cac455b9147fc
SHA256

681dbe8e4c750fce40053bb1281a42696a0ef86a03b7f2ec92337ef739a69cb8
SHA512

96f1d4744c0dca98457b01b1c9ecba28f76b30a667fd04b65f86dcc1c42a850881000732e73ed26c7ec2340c5e6b34213e9889405e34de368fdf65aaad43e382
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZp:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000230f2-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000230f2-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1080	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 3584 wrote to memory of 1080	3584	2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe	81
PID 3584 wrote to memory of 1080	3584	2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe	81
PID 3584 wrote to memory of 1080	3584	2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_de6c2325b85f4f86a82a2151f01794bf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1080

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
48KB

MD5
edd11e8cf69b7c246d1c4044e7b6ef59

SHA1
b95998df90d0664e04de93c09949163622789cc8

SHA256
12cf4e5e2a45c4321ecb928a5f9b2ab10c6b1d1387b960452a5143098e9ff576

SHA512
9f033e0dc8644ea74c9ef3b3d940ba6e287e88b871fd556526654ac60eff9ae9b4f4fa4a9108ba13c7ea167701128c0deb6c4037c0c741b96a41f42772fd3120

Download Submit
memory/1080-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1080-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3584-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3584-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3584-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download