1d023d7f4fb25ffcb7249d44ce7f57ac812e1bb71ad7ce4f772d5f4dc399e197

Analysis

max time kernel
88s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 18:21

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General

Target

2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe
Size

38KB
MD5

018ea4d649a9832ba28c440ca7d9a3f3
SHA1

a8a88f98da29629102bd4614e77e40321c513b51
SHA256

1d023d7f4fb25ffcb7249d44ce7f57ac812e1bb71ad7ce4f772d5f4dc399e197
SHA512

dd3b0943bd3994410f3667e8cd4cdbdae091905f9922209500bbd89bb178c2c1df3bd33ba5d161de50616dce85e2c47eb9c81fba8873f1b4ecbfbfe947e24e61
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/ysz1:i5nkFGMOtEvwDpjR+viDz1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3800-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002313b-13.dat	CryptoLocker_rule2
behavioral2/memory/3800-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2380-52-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3800-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2380-52-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3800-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000900000002313b-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3800-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2380-52-0x0000000000500000-0x000000000050F000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	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 3800 wrote to memory of 2380	3800	2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe	88
PID 3800 wrote to memory of 2380	3800	2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe	88
PID 3800 wrote to memory of 2380	3800	2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3800
- 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:2380

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
e888280aac15e203941f3b80efdc082b

SHA1
5cdc4585180405add4b4244cfb8c1e7ac8580cb9

SHA256
7100b145c4eca61aed6b987cf17c8705aff3515542c9049cc866fe29ac6d7a32

SHA512
0f6a692276c19b04cc964f2fe546f221a3563efd4a951743627d6c4e4582a192c38329ae5d1da3bf432a1122d6f95637ba2104d530fd391635ac8ce6fe8982c8

Download Submit
memory/2380-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2380-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2380-52-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3800-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3800-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3800-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3800-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3800-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download