9f6cb1f78feebc9f67cd5f5d049e65b8c3093df4a00ac61a4aa4a3c4e65bb67d

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 05:31

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General

Target

2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe
Size

79KB
MD5

29a538ea25c2ae46adba1992d93ae48d
SHA1

3dfb08251f715cc40eba6125df3efaf41ded1c60
SHA256

9f6cb1f78feebc9f67cd5f5d049e65b8c3093df4a00ac61a4aa4a3c4e65bb67d
SHA512

764b5cbaa60449d2a73cc1c7ea50aced2327476dd1153dc124a23a1d3b4a2a5e76734604af15fbc72bfb223b5ccb57b641fb1ff76edb4f41fb841b02081d7ef6
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7pBlqrr1HBJooSeKzu1adyBv:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_rule2
behavioral1/memory/2040-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1688-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1688-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_set1
behavioral1/memory/2040-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1688-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1688-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001224f-11.dat	UPX
behavioral1/memory/2040-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1688-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1688-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1688	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001224f-11.dat	upx
behavioral1/memory/2040-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1688-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1688-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1688	2040	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_29a538ea25c2ae46adba1992d93ae48d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
79KB

MD5
c35b6fd3cb19c32ce68f6fc633f5d9c4

SHA1
6001b7a6ec9dfefe28973f72e9c18d31208a528a

SHA256
e1a86874feb60a9ea895e14824eb46476e6d0ad2aad4c7fb449527f4d0c08604

SHA512
79b275a32147e22cfdbdc1465dbda14b36683339c9e359a430139067975ee1d2d848455ec5573230b2ddc5b064a89f87744565a03b3ee099d7ac68930f0c3720

Download Submit
memory/1688-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1688-25-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1688-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2040-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2040-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2040-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download