095ba3b10026f1089dd2af3002187c5c2c021011c7e305bdb75e80a52c19dad0

Analysis

max time kernel
151s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04-02-2024 03:48

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General

Target

2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe
Size

43KB
MD5

9cc7f22455fcdb1070ad962f2d69485b
SHA1

11a3d92d05778a300fb58b9c52be5025c4695f18
SHA256

095ba3b10026f1089dd2af3002187c5c2c021011c7e305bdb75e80a52c19dad0
SHA512

9661620a5d7d8d6a012752948b7015183896c10bd565501678361418f501a2a9c90b6e4e58fb49c8a8a369639708d725d8c082b50efbba8fcbde99d3059bfbde
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS5p:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+c

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/0x000700000002312d-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/0x000700000002312d-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	2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	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 3532	5048	2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe	85
PID 5048 wrote to memory of 3532	5048	2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe	85
PID 5048 wrote to memory of 3532	5048	2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9cc7f22455fcdb1070ad962f2d69485b_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:3532

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
44KB

MD5
9b9fac3a25c5455a59d642d6930056b3

SHA1
55d722380a87c9a256ca2f8617e03be8fbaf6b94

SHA256
36da78d81bccc6ba25123f4c0e9dad8bfddd574ae55c17c44293561199c5e3bb

SHA512
0277d1e0415cc40c04559c7751d775542bf16944cfb0916596a55bd3c3817d66eaa98b79d0709cc8a839a05c562200aa83608c765e19869948f1a51c7b14bbd6

Download Submit
memory/3532-18-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3532-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

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

Filesize
44KB

Download
memory/5048-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5048-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5048-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

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

Filesize
44KB

Download