fd324f9ce13e4f9e8515ef29d2b04dd2144015c6fd7b8ed0718c9d51daea0346

General

Target

2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe
Size

79KB
MD5

51b6b888e9c74eac9fae1e539eea5dd1
SHA1

a2508f4260c38fb6656cd26f150b2a4d7da68460
SHA256

fd324f9ce13e4f9e8515ef29d2b04dd2144015c6fd7b8ed0718c9d51daea0346
SHA512

142897a9c97ec3c4acd989fffbcd00873ff8c09842796d4b4c5fde6fd804158a6f35f091ea32b557b3a9cc8994e6a7c6829bb6939e2415f5eb5bee8c9764a4c3
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxnMD:T6a+rdOOtEvwDpjNtHPt

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1936-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000014af6-15.dat	CryptoLocker_rule2
behavioral1/memory/1936-14-0x0000000001EE0000-0x0000000001EF0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1936-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000014af6-15.dat	CryptoLocker_set1
behavioral1/memory/1936-14-0x0000000001EE0000-0x0000000001EF0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1936-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000014af6-15.dat	UPX
behavioral1/memory/1936-14-0x0000000001EE0000-0x0000000001EF0000-memory.dmp	UPX
behavioral1/memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3032	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1936	2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1936-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000014af6-15.dat	upx
behavioral1/memory/3032-27-0x0000000000500000-0x0000000000510000-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 1936 wrote to memory of 3032	1936	2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe	28
PID 1936 wrote to memory of 3032	1936	2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe	28
PID 1936 wrote to memory of 3032	1936	2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe	28
PID 1936 wrote to memory of 3032	1936	2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_51b6b888e9c74eac9fae1e539eea5dd1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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
79KB

MD5
f7e5a2e774ae4f90306b7f95fce3bc61

SHA1
c0bfbab3835549286363a50baa6c2f14b00f48c7

SHA256
297a3d99ef7321a752a650c37914758043d60299f40d5e22af40c43e1c98b095

SHA512
c66416f8fcd59092308169872a27ed91e185ff3d228fd59fa3010b5d227ab413f12f5b1f8f9be54ba085a2a8d55d74597c058f7a32c367f92b9595391ebc9852

Download Submit
memory/1936-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1936-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1936-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1936-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1936-14-0x0000000001EE0000-0x0000000001EF0000-memory.dmp

Filesize
64KB

Download
memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3032-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3032-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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