4b52d1e7bc56361d89ca1519cd507c0fd0dc9c3d5325e373c2a460f4e53241b7

Analysis

max time kernel
147s
max time network
152s
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, 02:38

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General

Target

2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe
Size

40KB
MD5

5798129b90867e8beb3fd7f908119045
SHA1

2a9cfce4c4685a7ffed148a18e008779cbc35697
SHA256

4b52d1e7bc56361d89ca1519cd507c0fd0dc9c3d5325e373c2a460f4e53241b7
SHA512

1ca113366975c33b55090bdaa980ab4fdb2efa5fa8b592d2c436290e35da1fd64fdc5783e66f6bb33046fa8845bf2e15f357702f76adbf933d2faf10e46fa5e9
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnISct/:m5nkFNMOtEvwDpjG8hgp+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4300-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002321f-13.dat	CryptoLocker_rule2
behavioral2/memory/4300-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2044-52-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4300-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2044-52-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4300-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002321f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4300-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2044-52-0x0000000000500000-0x000000000050E000-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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	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 4300 wrote to memory of 2044	4300	2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe	89
PID 4300 wrote to memory of 2044	4300	2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe	89
PID 4300 wrote to memory of 2044	4300	2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4300
- 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:2044

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
40KB

MD5
5b81806536420e4086e37a9cadc6bfd2

SHA1
d0e865dfc97731bc4bc5ce37e909c96cca0b97e1

SHA256
7547b7667a67bbea5a55cc585f15cd519596fc201816f8f16129980f13c281ff

SHA512
5078d918b4b18ed3c04bbc62950a01ed31b3539f607c90c9005dd83fdf841e42e01d521c36d723763631baf0bd80e77a6d910fbed043d5e98633ac516a03ed3f

Download Submit
memory/2044-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2044-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2044-52-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4300-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4300-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4300-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4300-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4300-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download