333260272bfcc29d3ee2f410a90aa0f0b6e0f8e58a2b079ce72a6b75e119f3fa

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 06:30

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General

Target

2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe
Size

99KB
MD5

56354a837b5b8fd6e16aec4c33846346
SHA1

5ab5e7fbe8b1cba3556b26dc44bc2ec08be3849a
SHA256

333260272bfcc29d3ee2f410a90aa0f0b6e0f8e58a2b079ce72a6b75e119f3fa
SHA512

aa22e3ded8c9d940f6072f1bd8d9a7349fbc71bf9ef0dd80b75ca0e9e3e5c9c2d1daa51163e1bf0865c9385f688bf032f98b46968b5be4ba8875efa90be90055
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJjut:V6a+pOtEvwDpjtzL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1900	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 3952 wrote to memory of 1900	3952	2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe	96
PID 3952 wrote to memory of 1900	3952	2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe	96
PID 3952 wrote to memory of 1900	3952	2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_56354a837b5b8fd6e16aec4c33846346_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1900

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=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:1884

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
99KB

MD5
3679b506f86dfd8ddb50f3e889f26e95

SHA1
221cce153f9ec1bd126ac4426dda8bfc08f5eb02

SHA256
55534d2e2fa7c5483d990ff56d95a5b6b5de61685be9118e700fb3c2f6889b91

SHA512
915e82ce670bbd7c6019bed512579499c1087636a08e546623ea618dc15598b3b606261acb39a1495482d4969644b739d9668d7a88c6725b22c799627dfeea15

Download Submit
memory/1900-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1900-18-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3952-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3952-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3952-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download