76768dc797b14f1821c10e50dda85cbe2db01c19fe7e80b69930059ffe58d413

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
12/02/2024, 04:11

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General

Target

2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe
Size

88KB
MD5

3f062d0ac36c9822b851dddf9d52979e
SHA1

be0f09a1b431d42d10e20409fd7f3698f3fb7b45
SHA256

76768dc797b14f1821c10e50dda85cbe2db01c19fe7e80b69930059ffe58d413
SHA512

a8fbe56076550b17011196ab05af8c785039ff7778ed79228b6cac3866cae90e28a2920d568d53732758fcf7595c402e80877ad94604a828ad568b3a44bd459c
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgkD:AnBdOOtEvwDpj6zS

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2216-12-0x0000000000670000-0x000000000067F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/868-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000126ab-26.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2216-12-0x0000000000670000-0x000000000067F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/868-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b0000000126ab-26.dat	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2216-12-0x0000000000670000-0x000000000067F000-memory.dmp	UPX
behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/868-21-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000b0000000126ab-26.dat	UPX

Executes dropped EXE 1 IoCs

pid	Process
868	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2216	2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2216-12-0x0000000000670000-0x000000000067F000-memory.dmp	upx
behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/868-21-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b0000000126ab-26.dat	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 2216 wrote to memory of 868	2216	2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe	28
PID 2216 wrote to memory of 868	2216	2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:868

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
88KB

MD5
8bd0c6e83009cdc3daef0ccd91f61ea9

SHA1
8d302eb9f68a6ea9d8517e2caac423cd094e2fda

SHA256
c9c6efa23ea8c07d59c200df56929e5ec5f70fa28f728ac6352e02baf9619bb0

SHA512
eb589ace398fdc0e8b57bf800a26767d99b18d90fceada74b39f8c5d021e79df6b7a1eed2ce83c37b0001a01be7ff9571640319bd7d18f326ae1445da7944cc7

Download Submit
memory/868-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/868-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/868-21-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2216-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2216-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2216-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2216-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2216-12-0x0000000000670000-0x000000000067F000-memory.dmp

Filesize
60KB

Download
memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download