45f0e607d56ba1e2e456bfe2b1057b2f8833cddd660ed58d72dd8b44e2f7e230

Analysis

max time kernel
150s
max time network
143s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 5 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012247-11.dat	CryptoLocker_rule2
behavioral1/memory/2648-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2648-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b000000012247-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2648-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3012-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3012-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
3012	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2648	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe

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 2648 wrote to memory of 3012	2648	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	28
PID 2648 wrote to memory of 3012	2648	2024-02-25_904c9c250432c7f02b9ec2c2298f8bd8_cryptolocker.exe	28

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3012

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
85KB

MD5
d05f57f1883e27c22175df88872be58a

SHA1
d711fc822023c78dc6f76b86c246e84fefeda781

SHA256
d2cb3f7468943b55707c7d57a1f9bcd35898414d5bb9837870f52b4c6090b547

SHA512
8091b84ef09e9e182e7d5a63b126adb57e882e0d5b1527b1687714af2ebe489185afa9d304dcfe9c963a60a77fc39b53e667d26fca1016dc3732d71b94415a34

Download Submit
memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2648-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2648-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2648-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2648-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3012-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3012-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/3012-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download