de7491c2cf222d75b0e411fdbd0359a60254ab4593d384703a0bd71a67279ae9

Analysis

max time kernel
119s
max time network
150s
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, 10:28

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General

Target

2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe
Size

95KB
MD5

64a1d5aabe41dfd7af37ae21e1988ec0
SHA1

c2c111160111c37d7d5dabfe24318dd3e4972af7
SHA256

de7491c2cf222d75b0e411fdbd0359a60254ab4593d384703a0bd71a67279ae9
SHA512

e70d55a735aa0c64660fcb7de4fb85a37a46748f49560551858905908f515219075ce513a12bfd2a05ecf26a7e86063d7ffc4a17222c34d6a87c29da988726e0
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT36:xj+VGMOtEvwDpjubwQEIiVmkf6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023157-13.dat	CryptoLocker_rule2
behavioral2/memory/1780-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1548-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1780-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023157-13.dat	CryptoLocker_set1
behavioral2/memory/1780-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1548-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1780-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c000000023157-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1780-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1548-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1780-55-0x0000000000500000-0x0000000000510000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1780	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 1548 wrote to memory of 1780	1548	2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe	85
PID 1548 wrote to memory of 1780	1548	2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe	85
PID 1548 wrote to memory of 1780	1548	2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_64a1d5aabe41dfd7af37ae21e1988ec0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1548
- 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:1780

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
95KB

MD5
501c2bf8945625dadf6abec5a3629efb

SHA1
c68dfbe3151a63843e3554ea3bcdd254427bf869

SHA256
0497a3a1fa77a4476aafc95a9d48a751237b894e3a88000c735f25f39912a5cd

SHA512
f081a91c4c560d38f2a73e097f60eb8372ecdcf58d67314fdd1632b402104d1793cea1a5b742782e88669a18f1770c5b94679b4a03ebf59b8fb452c8f62b4ecf

Download Submit
memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1548-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1548-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1548-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1548-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1780-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1780-20-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1780-22-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1780-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download