84ffa16990875f030535d3b18c0fd10800dbd290b2fc2651f3642e3dd83724c6

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 10:16

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General

Target

2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe
Size

37KB
MD5

b5d8d8f10af96099ef9dfd52ffbc0cca
SHA1

bb7f70c503d46361b7cfa9717f09ec420019f2d9
SHA256

84ffa16990875f030535d3b18c0fd10800dbd290b2fc2651f3642e3dd83724c6
SHA512

8f4fefad1d2a534f29c1822bd519a946f82803c261c8b0a0f8be9993a4f2649f80613421eb44a36a7e40db792cc46834d7cb56d672bd29d4aaab505f9d0bc1cd
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCp/:X6QFElP6n+gJQMOtEvwDpjBmzDUp/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012253-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012253-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2004	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2408	2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_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 2408 wrote to memory of 2004	2408	2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe	28
PID 2408 wrote to memory of 2004	2408	2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe	28
PID 2408 wrote to memory of 2004	2408	2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe	28
PID 2408 wrote to memory of 2004	2408	2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_b5d8d8f10af96099ef9dfd52ffbc0cca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2004

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
37KB

MD5
4841165d037b1e44de8d1e73c3fe0fb7

SHA1
6345f8b33ecbc82e329a9637b3252406e71acda2

SHA256
6df0cd62592bd03a66f8150a75d9d6490d2b0061476c1faadad4d94dd762bc48

SHA512
e3b57fd57906a26a6046b8f21f2f092a9229053df6a521f1876ede5aec93664d454313201dcbd8872a9e2f39d7677357c940dc63f09b5aed7f00620f9ef97107

Download Submit
memory/2004-15-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2004-17-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2408-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2408-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2408-8-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download