45f0e607d56ba1e2e456bfe2b1057b2f8833cddd660ed58d72dd8b44e2f7e230

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 13:39

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General

Target

2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe
Size

85KB
MD5

904c9c250432c7f02b9ec2c2298f8bd8
SHA1

bee44ac20e263841fabbe119aa5aad9d480288bf
SHA256

45f0e607d56ba1e2e456bfe2b1057b2f8833cddd660ed58d72dd8b44e2f7e230
SHA512

bf3116e825190b3e12aa53b9fdaf928f24a0673bf7373e63be957580fdc24cfaa179ed33265d9657eb007c53cb2b3bbe8ff903a06460b6bd5289456327c2c10e
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvxoR:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8uR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023233-13.dat	CryptoLocker_rule2
behavioral2/memory/3728-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4628-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3728-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4628-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023233-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3728-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4628-26-0x0000000000500000-0x000000000050F000-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4628	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 3728 wrote to memory of 4628	3728	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	88
PID 3728 wrote to memory of 4628	3728	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	88
PID 3728 wrote to memory of 4628	3728	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4628

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
85KB

MD5
d05f57f1883e27c22175df88872be58a

SHA1
d711fc822023c78dc6f76b86c246e84fefeda781

SHA256
d2cb3f7468943b55707c7d57a1f9bcd35898414d5bb9837870f52b4c6090b547

SHA512
8091b84ef09e9e182e7d5a63b126adb57e882e0d5b1527b1687714af2ebe489185afa9d304dcfe9c963a60a77fc39b53e667d26fca1016dc3732d71b94415a34

Download Submit
memory/3728-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3728-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3728-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3728-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/3728-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4628-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4628-21-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4628-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download