165b5fb4b951b6f6ea97f7b58125c6d0d6b1f216d6e961c1974fd089a877a3d9

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 08:49

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General

Target

2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe
Size

67KB
MD5

c975b2d52b7e1505fdcf975f2dd10e06
SHA1

8012b50ef792895792a3734d1ab670444df26d50
SHA256

165b5fb4b951b6f6ea97f7b58125c6d0d6b1f216d6e961c1974fd089a877a3d9
SHA512

403a1614d1804870eb0e1caf5f9e03743834a60604366e9e709d7352bfaf833fd4dd17d7bd1bed6bc48a5955456d231589c4787c12829953756dd88612e9640c
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUy:DW60sllyWOtEvwDpjwF85o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2096-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1144-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012253-11.dat	CryptoLocker_set1
behavioral1/memory/2096-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1144-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1144	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2096	2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe

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 2096 wrote to memory of 1144	2096	2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe	28
PID 2096 wrote to memory of 1144	2096	2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe	28
PID 2096 wrote to memory of 1144	2096	2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe	28
PID 2096 wrote to memory of 1144	2096	2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_c975b2d52b7e1505fdcf975f2dd10e06_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1144

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\asih.exe

Filesize
67KB

MD5
6869a93d56bdd006fcec5d7a8a6e19c7

SHA1
ac7550d068a286a9f4c8721d0b991f8632efc725

SHA256
336ee0e0564bc322c402c389fb007fb17efdf4019c45c80fbb13e8cc5acc7b2d

SHA512
b60f87915880945d00c8548c8a6be650476c2d45fc0d4aa6c405d5faeabd11c78ec45652e3ca3ced2db193a731dc173628b5bde144eaeabb96b9d8968bb6313e

Download Submit
memory/1144-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1144-19-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1144-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2096-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2096-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2096-9-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2096-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download