42d68c1acf1744aa2b1300fbaee2429a93067651740c5c890b6cf1af985d0d77

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 15:46

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General

Target

2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe
Size

72KB
MD5

c907d0f1c56d902c27cff153ac1b9d9c
SHA1

0e1be5feff5adf5727e762ec9fa32ce9c4c31194
SHA256

42d68c1acf1744aa2b1300fbaee2429a93067651740c5c890b6cf1af985d0d77
SHA512

57e8ebcb53876f7eb353a5a623f179c994a2a5b2ddd34312e0a0a03ae798694fd3773c3af5be780cad06a1b0b8898b40d1fe88ba962b7fd39f30ba3973f1dbd4
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97xw:C4Q2c94OtEvwDpj4H8zT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2256-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001445e-11.dat	CryptoLocker_rule2
behavioral1/memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2900-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2900-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2256-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001445e-11.dat	UPX
behavioral1/memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2900-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2900	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2256-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001445e-11.dat	upx
behavioral1/memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2900-27-0x0000000000500000-0x0000000000510000-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 2256 wrote to memory of 2900	2256	2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe	28
PID 2256 wrote to memory of 2900	2256	2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe	28
PID 2256 wrote to memory of 2900	2256	2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe	28
PID 2256 wrote to memory of 2900	2256	2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_c907d0f1c56d902c27cff153ac1b9d9c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2900

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
a54b6cb9086e5fc8ce9167ccb5e600f8

SHA1
e83d236646e86685c90e21d374148aaf90a8d25d

SHA256
a3e70377fa2bc000b2317af7db853904acf4a71976a5b1fea2218b117183f43b

SHA512
9bf942b95802fe31410aae9c5f14b0491e11720e1b2ae073cbe53621a8d20048e4d08d383a50ae3cd818d8c2a40b761e8ed472373a69beb152c06ddcaeb70c0f

Download Submit
memory/2256-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2256-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2256-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2256-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2900-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2900-19-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2900-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2900-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download