d50649e4a35548628fcb3d27eba9997680bbf54529318e6f69823837c8b8d262

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 19:24

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General

Target

2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe
Size

48KB
MD5

44b544383c5ef6ed264949e2ad6ef3c1
SHA1

cb079b2f020e36f3bb91c079e1718ce566aa1693
SHA256

d50649e4a35548628fcb3d27eba9997680bbf54529318e6f69823837c8b8d262
SHA512

558a0c7f1ad155aaa8576c662677ff514cb7ee53438f2257e59d204cefa3f947e88fa00d703cf9830f3b50e0dec43c5f2cd7a0b3785654ede627e61f7ed05d4c
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPoU:P6QFElP6k+MRQMOtEvwDpjBQpVXzU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4728-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023259-13.dat	CryptoLocker_rule2
behavioral2/memory/4728-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4280-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4728-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023259-13.dat	CryptoLocker_set1
behavioral2/memory/4728-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4280-26-0x0000000000500000-0x000000000050B000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4280	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 4728 wrote to memory of 4280	4728	2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe	91
PID 4728 wrote to memory of 4280	4728	2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe	91
PID 4728 wrote to memory of 4280	4728	2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_44b544383c5ef6ed264949e2ad6ef3c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4280

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 --mojo-platform-channel-handle=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2868

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
bda80bd818157e727785a9f01f00bd16

SHA1
11d2092e74aefd7051c2ba6f56c6997e9238142f

SHA256
52c10d7864e9cdeaf39f8c530bc489caec0a52d568d32a0adfeeeb0a3b6a959d

SHA512
7e6ee9e56cf99ce3e25e52f8fb9131d210c3ce53112a12afc1071ea86f9a6b27b0e8361ea7f2bbeffd05576a6cc832835a6d360156ae00113aa9bc05eda623e3

Download Submit
memory/4280-18-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4280-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4280-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4728-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4728-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4728-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4728-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4728-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download