aa281c20cc1b285b3b932410fd390dad02c5552e48c047c201c25db4801ddd9e

Analysis

max time kernel
142s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 13:42

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General

Target

2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe
Size

82KB
MD5

0356413005b841a65af895a5ba002ac4
SHA1

a10b6eb98dc465cd007df953c0b6f384c1e74ac9
SHA256

aa281c20cc1b285b3b932410fd390dad02c5552e48c047c201c25db4801ddd9e
SHA512

a46b39c38dcb4e9e16efeee24b571bf81a3d56229e03f5f80d236b276d8e6bf8e15e34214c62c2df65e62abd2c875496e3adf5c42638585e1bb966ca63a1079b
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qw7:zCsanOtEvwDpjm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014454-11.dat	CryptoLocker_rule2
behavioral1/memory/2196-13-0x00000000028C0000-0x00000000028D0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000014454-11.dat	CryptoLocker_set1
behavioral1/memory/2196-13-0x00000000028C0000-0x00000000028D0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000014454-11.dat	UPX
behavioral1/memory/2196-13-0x00000000028C0000-0x00000000028D0000-memory.dmp	UPX
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2536-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2536	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2196	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000014454-11.dat	upx
behavioral1/memory/2196-13-0x00000000028C0000-0x00000000028D0000-memory.dmp	upx
behavioral1/memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2536-19-0x0000000000500000-0x0000000000510000-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 2196 wrote to memory of 2536	2196	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	28
PID 2196 wrote to memory of 2536	2196	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	28
PID 2196 wrote to memory of 2536	2196	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	28
PID 2196 wrote to memory of 2536	2196	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

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
82KB

MD5
cd4a5aa8aed0525cd3dabb8b9e273ad8

SHA1
53b0e32027c5e0c82cadc40ad9f4db0c914634dc

SHA256
9ae640405c7d770d33f52306d58534eda95dd9c2ce0c5d69eda024025d74508f

SHA512
aee44eea17b35a00049f9df71e93d54ec8074cec1b53dc635cf96aba25d9f307b130a047751d2de1deb5232788389e8caefd4bb2b1a4b5145f4ccfe602af3c00

Download Submit
memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2196-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2196-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2196-9-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2196-13-0x00000000028C0000-0x00000000028D0000-memory.dmp

Filesize
64KB

Download
memory/2196-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2536-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2536-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2536-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download