08c3fe318c6ba9beef467e0b745e3dbb00785e0764880836f1d136f5fd178e67

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
21/05/2024, 23:40

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General

Target

2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe
Size

71KB
MD5

6d3db44f8894645eee81ee8b136538a4
SHA1

a9e3ed87eb08b8bae6a344a193e996593cf62903
SHA256

08c3fe318c6ba9beef467e0b745e3dbb00785e0764880836f1d136f5fd178e67
SHA512

889e908c736e33bb71b1961e9b2f0e8dbdbce57aac9b390dc9d42eed3ad7b75d7809bf2288097c49668f1d1e33e78abaff2af914211c7b866b9398c4bf1df0e2
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Hd:C4Q2c94OtEvwDpj4H8z8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001315b-11.dat	CryptoLocker_rule2
behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001315b-11.dat	UPX
behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2520	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2460	2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001315b-11.dat	upx
behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-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 2460 wrote to memory of 2520	2460	2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe	28
PID 2460 wrote to memory of 2520	2460	2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe	28
PID 2460 wrote to memory of 2520	2460	2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe	28
PID 2460 wrote to memory of 2520	2460	2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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
71KB

MD5
7cac1e1ba0da324602d08f83692205ea

SHA1
5fc6fcdca50d20dde0ac93c5899549434b618a33

SHA256
b6c0e9b4c50861c0e6783b1c22c051b2089bb35991409c31f31083d247060bbe

SHA512
f61d4753e597b380720b14db383ecfcf0a0fe7233b2d9013dfe2414b44fdc18f8efd07fcb39985a1f26f408358e755f9870aee082002e205fa6bedcc7b0be309

Download Submit
memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2460-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2460-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2460-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2520-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2520-26-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download