b6f3348bba6f6f0e9485b14f3d79f6a4c320f0ed4ef54d484458212e93e52c9f

Analysis

max time kernel
149s
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
22/02/2024, 06:13

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General

Target

2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe
Size

68KB
MD5

e5846549a5ec822b80f38a3393ea6f27
SHA1

2c78685cad0019e1b5b8d2aa9355ba602528cb1b
SHA256

b6f3348bba6f6f0e9485b14f3d79f6a4c320f0ed4ef54d484458212e93e52c9f
SHA512

e85000fc51280db963e6e1af7d04df3b8dcf0f9fe43104f5f94c99b62f723c7cd73de6c8a7b3b898840ad7a9bb53383624e4e0dedb8faf5caa8f70dc9b46045e
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUsl:DW60sllyWOtEvwDpjwF85o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1340-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023219-13.dat	CryptoLocker_rule2
behavioral2/files/0x0009000000023219-16.dat	CryptoLocker_rule2
behavioral2/memory/1340-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1340-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023219-13.dat	CryptoLocker_set1
behavioral2/files/0x0009000000023219-16.dat	CryptoLocker_set1
behavioral2/memory/1340-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4708	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 1340 wrote to memory of 4708	1340	2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe	86
PID 1340 wrote to memory of 4708	1340	2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe	86
PID 1340 wrote to memory of 4708	1340	2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_e5846549a5ec822b80f38a3393ea6f27_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4708

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
69KB

MD5
2e0ab8c53a78e80c0099924c9de8a5a0

SHA1
efd34fb1199cdb7b764dd4d24d3199cbb8cb034d

SHA256
7aab68b73530c6f5a2478514862a3a4671f88d3292909b0a174eeb2345b87424

SHA512
fe7a6485f2d6f1bdef72ef76fe4909c90a12fe63873878949eb0986eea531b9827008f6630981d228b37dcafbf4d94daf0084e2b60537077cd598c9a42863456

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
64KB

MD5
bb4cefe1d5261b45df29c0fe2b61b3e4

SHA1
446f2bb8261934ef2e9fa583afa12e32e2312cc6

SHA256
e30b6b18b96731df84b3ba46cb763ec035c21d2a141c3252c712aa099768fadf

SHA512
3abe25a14951083b589084b8e132b2d21591a49ceb8a0d1118b50e94e25c0f190827c1a31fae48845c87b436608505f3573388cbef9a3132ad37328e7afeffac

Download Submit
memory/1340-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1340-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1340-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1340-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1340-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download