4ed515968ec42796b6ddd530d2d38cbc77766d02d0097b9b8c54b08bab69cbdd

Analysis

max time kernel
151s
max time network
157s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 01:25

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General

Target

2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe
Size

71KB
MD5

1174e24a7987d5b9e98fb362357cbd2f
SHA1

66642890e3582ed5ac5c3852dbc5578cfe8f53ee
SHA256

4ed515968ec42796b6ddd530d2d38cbc77766d02d0097b9b8c54b08bab69cbdd
SHA512

619262b7713c20fdfac562ea1affb4202180c2c4badc9632abb57f675f51ed9cb42f83e6d52d3f243ffa5786648f3488f24d57962c05a263a721b612130cb3c2
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9R:C4Q2c94OtEvwDpj4H8zQ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1152-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001441e-11.dat	CryptoLocker_rule2
behavioral1/memory/1152-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2232-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2232-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1152-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2232-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1152-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001441e-11.dat	UPX
behavioral1/memory/1152-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2232-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2232-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2232	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1152	2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1152-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001441e-11.dat	upx
behavioral1/memory/1152-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2232-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2232-27-0x0000000000500000-0x0000000000510000-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 1152 wrote to memory of 2232	1152	2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe	28
PID 1152 wrote to memory of 2232	1152	2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe	28
PID 1152 wrote to memory of 2232	1152	2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe	28
PID 1152 wrote to memory of 2232	1152	2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_1174e24a7987d5b9e98fb362357cbd2f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2232

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
a60e02fef5fa2b3085dd36de54077a2d

SHA1
304a95f6076bd24aa9a761c6f74d0debc0d53180

SHA256
4fcc2ecedfa533cc94582841bc79c252a26d370d69e4d0be8982f6297d37182c

SHA512
1867e5e171ffb758260beeeba9fa71a90955a20d7c2a6d7f44e71f9494c2ea056712ae3d8197c97a680d5b4a937bb58b96127d26e229137e228d36544724bdf4

Download Submit
memory/1152-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1152-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1152-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1152-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1152-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2232-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2232-19-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2232-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2232-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download