8c7f8922d6ace1b23d9d68b0d6a48e1e720e2d69f963b83f408e02ef7a192bd7

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21/05/2024, 04:33

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General

Target

2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe
Size

74KB
MD5

22538fcb91c4dc8914300a717054e809
SHA1

28d2fa3a00e3ae77fd40b75d70aee2112d5e23a7
SHA256

8c7f8922d6ace1b23d9d68b0d6a48e1e720e2d69f963b83f408e02ef7a192bd7
SHA512

e9f3b522c43d6c1d1ab47ed12d79f97a309cd136ecd900278a838345a26e4cb1dd17b4870b2e746582e3ba167dbed0ad5b84465845557df84ff06cd3503ee4fa
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Vu:C4Q2c94OtEvwDpj4H8zR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3052-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3052-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001228a-11.dat	UPX
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3052-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3052	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2432	2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001228a-11.dat	upx
behavioral1/memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3052-26-0x0000000000500000-0x0000000000510000-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 2432 wrote to memory of 3052	2432	2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe	28
PID 2432 wrote to memory of 3052	2432	2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe	28
PID 2432 wrote to memory of 3052	2432	2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe	28
PID 2432 wrote to memory of 3052	2432	2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_22538fcb91c4dc8914300a717054e809_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3052

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
74KB

MD5
35145cf17ab5f4b73c851aa04c7d0e18

SHA1
49c45cc26bd7a1019a505b3d0ac015ae22af3f83

SHA256
170a904df3924a1b3bb5822e26ebff19ec1f30ee781c32c82958dc5e61f99532

SHA512
b68ab55c4a037850141e5ea94137a4990979ac8358663353736b28fddc1669c5ec94c404711e08c4733484442ea52cdff56e74a0f10724988a9c08d196a731c8

Download Submit
memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2432-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2432-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2432-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3052-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3052-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3052-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download