a72f5df1731f1e04c4399100a37f044cf47aafe41cddb30169d2e3819b137645

Analysis

max time kernel
152s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 09:57

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General

Target

2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe
Size

86KB
MD5

ce72c5a7c4a97cebecdef7cd72048c97
SHA1

7107b88c092d41c2d9cca66e6513fd698ea51a55
SHA256

a72f5df1731f1e04c4399100a37f044cf47aafe41cddb30169d2e3819b137645
SHA512

01104ba4e8b24f8dde13fd4a741261ea382803137833a74e84a541ca7a503dab80bf6ccdf3b70d425e530fee0e67502aa9bef023ec6e4c9728f72801e7ec0712
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvxgna:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8ya

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023253-13.dat	CryptoLocker_rule2
behavioral2/memory/3688-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2444-51-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3688-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2444-51-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023253-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3688-24-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2444-51-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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	2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2444	misid.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 3688 wrote to memory of 2444	3688	2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe	97
PID 3688 wrote to memory of 2444	3688	2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe	97
PID 3688 wrote to memory of 2444	3688	2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_ce72c5a7c4a97cebecdef7cd72048c97_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2444

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=4192 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:5112

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\misid.exe

Filesize
86KB

MD5
fa0a8fa4da4029d0c70f93319c4cdd4f

SHA1
94657e7213ee4b85a872c53c111eb5f152fd7a07

SHA256
b514b954bab3a3cc60314f23e228b1fe0862a1fd6cf9b2dc3edfa936c98b416d

SHA512
9eb1ecbf8e6ced2de734a757f0054d7f620a3a18536418b7f6b72fa05aed97a129530dc54b75414083b0bfd4375eb46626827844b08c084614bbcdc737d74bac

Download Submit
memory/2444-51-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3688-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3688-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3688-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3688-24-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download