3cdc5b3e81127e93f5ab6f98f3d350fa600717853155deb4e5ab8ad6df878e20

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 11:22

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General

Target

2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe
Size

61KB
MD5

107458889576b27798377f93e7f05c82
SHA1

698315c283288f74779b26b0ac457bdc4b6f516a
SHA256

3cdc5b3e81127e93f5ab6f98f3d350fa600717853155deb4e5ab8ad6df878e20
SHA512

e077b28443f88ef76a44e6c94881a2431364a7327b4d22b2bf3cc772f974069b6517ee5b176843ecfa929da7ad9ea0e88aa0c5cbd5e332383c69583dcb221cc8
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIr3:TCjsIOtEvwDpj5HE/OUHnSMN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000155ed-11.dat	CryptoLocker_rule2
behavioral1/memory/2044-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2868-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000155ed-11.dat	CryptoLocker_set1
behavioral1/memory/2044-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2868-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2868	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-01-25_107458889576b27798377f93e7f05c82_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 2044 wrote to memory of 2868	2044	2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe	28
PID 2044 wrote to memory of 2868	2044	2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe	28
PID 2044 wrote to memory of 2868	2044	2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe	28
PID 2044 wrote to memory of 2868	2044	2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_107458889576b27798377f93e7f05c82_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2868

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
61KB

MD5
8c894f036910c6c91ca9f138498000df

SHA1
00a70f7f4f8bb99bf16d65a098ecc8660c999290

SHA256
e6610a17393303a0bd8ac1218c14d9325d932dde4d2a259a41b802535dc95937

SHA512
9f75b23c0ca9c9ac3ac5fcfde5fdfe83bf5610daa004bfe128f07127fd07030e283dc13768cc37c21da6433de7aad2b3ab76f925d25f2fdcc3a30a19f54992da

Download Submit
memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2044-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2044-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2044-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2044-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2868-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2868-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download