d88cfba962e3af83234a113edcfdb823873d6843309f85b607881572155f2a2c

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 02:45

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General

Target

2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe
Size

46KB
MD5

6ec5fe9e7270d6d98099791d8f4b9c5e
SHA1

66676bb2adfc97d06155a8ab47b25c09f1721311
SHA256

d88cfba962e3af83234a113edcfdb823873d6843309f85b607881572155f2a2c
SHA512

8edf97dc28d582a099cbcb57c11108a49d28b79fe308fbb723271e14f93d3a7b34f048320a3afa90e39e70fb484596056b852d54293bd31fc3e7d2a38b7fbf95
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPow:P6QFElP6k+MRQMOtEvwDpjBQpVXzw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000235bb-13.dat	CryptoLocker_rule2
behavioral2/memory/4844-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3388-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4844-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000235bb-13.dat	CryptoLocker_set1
behavioral2/memory/4844-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3388-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4844-27-0x0000000000500000-0x000000000050B000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4844	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 3388 wrote to memory of 4844	3388	2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe	89
PID 3388 wrote to memory of 4844	3388	2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe	89
PID 3388 wrote to memory of 4844	3388	2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_6ec5fe9e7270d6d98099791d8f4b9c5e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4844

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4376,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:2416

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
47KB

MD5
7714029bbee27d57781c73429e677b8d

SHA1
f4859f88fc132539090d1e1f2f35bd3a86c749b4

SHA256
0560798f35b7e549fd3515fe3247bdcc36bb68de419fb5f756e253eb0777cec0

SHA512
719bda935d704919ee2a0d80b980451c9e2833b7b81c3d5c47cedaf27e81cdcb775ab601c978327152078c82eca72abf3dba29f2c03d37fbe7cfd2047a62cc82

Download Submit
memory/3388-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3388-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3388-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3388-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3388-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4844-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4844-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4844-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4844-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download