f0ff9f441c13270b71e44d333c011b7dde514cbf47ca76857ee5ea297481cb06

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 04:40

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General

Target

2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe
Size

128KB
MD5

f53151c1b9fd89145db85920347c101f
SHA1

ba9881feff61a452f4f1c795a90fc72c25dac443
SHA256

f0ff9f441c13270b71e44d333c011b7dde514cbf47ca76857ee5ea297481cb06
SHA512

4561995bf1e03f0c2b6f7c5aae138c0d780bfacb99ba7cf0cd8935f6e12d8ca81dd4c36d523a2c8de4ad708977a49c7f0e3dcb84d5e7043f7c4b8bb56ca802fd
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1ebHkW0:AnBdOOtEvwDpj6zM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2864-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001225d-15.dat	CryptoLocker_rule2
behavioral1/memory/2864-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1324-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2864-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001225d-15.dat	CryptoLocker_set1
behavioral1/memory/2864-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1324-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2864-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c00000001225d-15.dat	UPX
behavioral1/memory/2864-14-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1324-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1324-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1324	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2864	2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2864-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c00000001225d-15.dat	upx
behavioral1/memory/2864-14-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1324-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1324-26-0x0000000000500000-0x000000000050F000-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 2864 wrote to memory of 1324	2864	2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe	28
PID 2864 wrote to memory of 1324	2864	2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe	28
PID 2864 wrote to memory of 1324	2864	2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe	28
PID 2864 wrote to memory of 1324	2864	2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_f53151c1b9fd89145db85920347c101f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.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

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\asih.exe

Filesize
129KB

MD5
87c65ad3235a81e4e815fee0d795a58e

SHA1
7dcce8d2f115078c575927fd762516f939a218c7

SHA256
3f642081b1f4583e119b704c65b306f825a947c20532ba6df28b558eaeabe130

SHA512
ec3fbe4c82a4246846a91e2a5537b80a4285c9fc1c310a474d34bcbc8014df2f4e5815866634072561cd1999e5395cb7128885b36d80da226374e9d02f2549f7

Download Submit
memory/1324-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1324-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1324-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

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

Filesize
60KB

Download
memory/2864-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2864-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2864-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2864-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2864-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download