5a1eee164792e082b30ad7f323a106be3627acc432840201c61adb6e18613777

Analysis

max time kernel
90s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 01:05

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General

Target

2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe
Size

39KB
MD5

849dc24f4d859842fa30535c45b75606
SHA1

3aba0351bebd68a993223c40922e5f512748d757
SHA256

5a1eee164792e082b30ad7f323a106be3627acc432840201c61adb6e18613777
SHA512

5ed939ac9c8f211359186201ff6420fec23b11a41d07ee9cac77367e4aee31eb42c4f5628307aa28dea3650ea3aff028eba20d1ac3c864beef646b88c0809877
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRv:m5nkFNMOtEvwDpjG8hhXd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4296-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321a-13.dat	CryptoLocker_rule2
behavioral2/memory/4296-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3604-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4296-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3604-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4296-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002321a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4296-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3604-54-0x0000000000500000-0x000000000050E000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3604	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 4296 wrote to memory of 3604	4296	2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe	67
PID 4296 wrote to memory of 3604	4296	2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe	67
PID 4296 wrote to memory of 3604	4296	2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe	67

C:\Users\Admin\AppData\Local\Temp\2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_849dc24f4d859842fa30535c45b75606_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4296
- 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:3604

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
39KB

MD5
a0890bdb2424432e2cdaaa9b3b80fbbd

SHA1
e6dc32c2538332c39da28fd15db65fef5006cfb6

SHA256
ccbe9f0e278f22d680b1b4a38f3dcd8492503ae99aa06cedc74149f5d81b6482

SHA512
46af63e9a1b5f47ff56c86914fc0930c01ac19c5be0b45e757c7d9ab177d57cad04e43cc8bd6ba0edde6966ae6b32488ea0a7b1c2e83d8170d3c45d863b1bf02

Download Submit
memory/3604-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3604-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3604-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4296-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4296-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4296-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/4296-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4296-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download