5f43c9e78bc23a8216ffd50d6a1c5bf18f7efbd67f7df36beef4e2248ceb4745

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 05:36

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General

Target

2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe
Size

39KB
MD5

2690644a0992ffcaa023d986c4f9b9cb
SHA1

01af7e3a811998fb32a51f828ab300932b70824e
SHA256

5f43c9e78bc23a8216ffd50d6a1c5bf18f7efbd67f7df36beef4e2248ceb4745
SHA512

d9215725b13dbea8fb7671667373f4780120222e8915449522542e8106342f94ac0a45ff0e6173f03534bcc6f5e1e353bf7c36eed9691ffc3177ac3551e57c34
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMWKaQt:6j+1NMOtEvwDpjroA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1568-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_rule2
behavioral2/memory/1568-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1568-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_set1
behavioral2/memory/1568-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1568-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e9a0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1568-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1324	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 1568 wrote to memory of 1324	1568	2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe	87
PID 1568 wrote to memory of 1324	1568	2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe	87
PID 1568 wrote to memory of 1324	1568	2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_2690644a0992ffcaa023d986c4f9b9cb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1324

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
0d9f26507873ad3271e39725e923e6da

SHA1
b41cced11d1615c8053321ac5d76e20b03cee53b

SHA256
a166c59e0020e72e0c37c430eae0b5213828d803b7e0169b4052d947b0c2ac7c

SHA512
21757988b49ff0e8644a4a78dcd08394f56aeadbaded04f1df360cb66c764cc01b6316a53f1e246f08fb2e1b9fb4b47aaa1a32fad60c9775d28947b3c7761711

Download Submit
memory/1324-19-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/1324-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1568-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1568-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1568-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1568-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1568-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download