39777f3f33863c0f6de693d9d1e9027da5b517d371b17b6d2e60888e51269b23

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 23:33 UTC

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General

Target

2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe
Size

77KB
MD5

e9241eb7b30c4cd4208b06e6f6fb1bf6
SHA1

da0cb72bf2c16e673ace471d71345cbaeac194d5
SHA256

39777f3f33863c0f6de693d9d1e9027da5b517d371b17b6d2e60888e51269b23
SHA512

7644b052ea536502d8dc6c56766d1e1f7f505ee3ab2c0f0bb68640f78eb869d0c50a265e8b3ded1334a14dc5f5cebf60d14204657dd6c5d45db69af1bbe58eb9
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufLV:vCjsIOtEvwDpj5H9YvQd2N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2748	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2524	2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_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 2524 wrote to memory of 2748	2524	2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe	28
PID 2524 wrote to memory of 2748	2524	2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe	28
PID 2524 wrote to memory of 2748	2524	2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe	28
PID 2524 wrote to memory of 2748	2524	2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_e9241eb7b30c4cd4208b06e6f6fb1bf6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2748

Network

DNS

bestccc.com

misid.exe

Remote address:

8.8.8.8:53

Request

bestccc.com

IN A

Response

bestccc.com

IN A

103.14.121.240

103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

52 B
1

8.8.8.8:53

bestccc.com

dns

misid.exe

57 B
73 B
1
1

DNS Request

bestccc.com

DNS Response

103.14.121.240

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
77KB

MD5
6beea039cbaac66e5664575cfcb60033

SHA1
51fa99de1a7bf4a34b73b6863f7cfd35482b0004

SHA256
9bfc7662ddcb845cf2626151728f91177821e193887da62473bc8a3d7daf6a0f

SHA512
9809ee261474fe00d52efd8249b16f20e681b719d0ad46832c7d2a0af2e31cadadbbad7571e47354b896504e4f28dd6e57da43e1b06bea56f7673f73eabd2d8b

Download Submit
memory/2524-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2524-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2524-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2748-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2748-16-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download