8d37b9dbd1a589543a3fe1a314f9264890196f3e2b330b4a8c8758736907679d

Analysis

max time kernel
132s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2024 11:26

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General

Target

2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe
Size

95KB
MD5

171441c38092b950dbca85265ba25362
SHA1

bab8fb59cdeadce9afefbaa607cd505554e09a9a
SHA256

8d37b9dbd1a589543a3fe1a314f9264890196f3e2b330b4a8c8758736907679d
SHA512

bb1bb53f2954c36ecffc40e7aa04047bf47938d9585dfcb6e7aea767aaa9879645bff6375c80784febb02937b02606bbb1c65eead93e51d36cd6a7392eb89cf7
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT32:xj+VGMOtEvwDpjubwQEIiVmkf2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_rule2
behavioral2/memory/836-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/448-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_set1
behavioral2/memory/836-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/448-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002325a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/836-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/448-54-0x0000000000500000-0x0000000000510000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
448	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 836 wrote to memory of 448	836	2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe	86
PID 836 wrote to memory of 448	836	2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe	86
PID 836 wrote to memory of 448	836	2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_171441c38092b950dbca85265ba25362_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:836
- 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:448

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
211febdbfdff170fab883f552a338da1

SHA1
46434069888718768109b265f6f3ec1f79717743

SHA256
23240ae7767aab311645ae300c4c138b8e0b0a565e4feefc54d7ca1ee3b8119d

SHA512
1fed4b194ad5d366fd0412b16c5bfa22208f949120a82d6b45b69ff6a9167b941f0515515c8c0a6fc211a0afa6b3fa53fc94d06e6f67322502685959d1e6196f

Download Submit
memory/448-25-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/448-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/448-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/836-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/836-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/836-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/836-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download