9585642d7f78ee74bd1d9ec7640f1bfebed164cbc6cda690ffea1f30f8fed1d7

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 04:11

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General

Target

2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe
Size

72KB
MD5

4f5207feb7eccb1adeaa107269df8244
SHA1

ada94e48f91aab111f9ee5461baeeae07fe063d6
SHA256

9585642d7f78ee74bd1d9ec7640f1bfebed164cbc6cda690ffea1f30f8fed1d7
SHA512

abc894abfdf37309d08f4363be34473c73fbf10e5471eeb265d89d1c568fa4201a910c4eba6b6b0d4a04868e3eb223fc44b7c1cc7924b8a86b60b84ffa653d2c
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9m:C4Q2c94OtEvwDpj4H8zz

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000144e0-11.dat	CryptoLocker_rule2
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1664-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1664-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b0000000144e0-11.dat	UPX
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1664-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3036	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1664	2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000144e0-11.dat	upx
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1664-16-0x0000000000500000-0x0000000000510000-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 1664 wrote to memory of 3036	1664	2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe	28
PID 1664 wrote to memory of 3036	1664	2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe	28
PID 1664 wrote to memory of 3036	1664	2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe	28
PID 1664 wrote to memory of 3036	1664	2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3036

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
72KB

MD5
393df555e2a156c40a48c0aab6ee5270

SHA1
6e0c7e935ae4df0f9269cce23f6d24bcedbfe97e

SHA256
fc322b84fd83c1559f3e5c88c0f0215dd6efa431d1d2b58949f8b574640c51f0

SHA512
8c2366b212eeed2f9038d277d43010222492e8ad20baf9f2fb04a39ab3dec2b87b4cc01a6085390dc7677e99e876997721a66892651fffdc0fb422b9071f958f

Download Submit
memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1664-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1664-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1664-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1664-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3036-18-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download