a99a7d71e704b342f062a156196543dddde34600e099f862ecaf33e526080685

Analysis

max time kernel
143s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
23/01/2024, 18:31

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General

Target

2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe
Size

125KB
MD5

4c4bcb20cd9d410f69ad7f773a34425a
SHA1

71668cccfa89ba31322b8d1e5d58061068f3c66a
SHA256

a99a7d71e704b342f062a156196543dddde34600e099f862ecaf33e526080685
SHA512

d2613d2917002cd8d589a115bed7ccea8a815e722e3fa9fae887ea7ca582e1085dc593dd4a03fda7a67d041da56292789e87c7fec27fde0d3af03fc059b47e3f
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpBj:vCA9OtEvwDpjJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012247-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012247-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1976	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_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 1984 wrote to memory of 1976	1984	2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe	28
PID 1984 wrote to memory of 1976	1984	2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe	28
PID 1984 wrote to memory of 1976	1984	2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe	28
PID 1984 wrote to memory of 1976	1984	2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_4c4bcb20cd9d410f69ad7f773a34425a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1976

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
125KB

MD5
3e34184babe3552d22542550d996161d

SHA1
cdc49f037bc9cb9f5a56cac01d2a264c859775f3

SHA256
fecb8679a14a8a4b52a2cc6b87ea8b5b77ec288867a852d81bef883e5a73dff6

SHA512
be4d8672f6d9145762ac0cba4fec26397ac3898ed041228674e758ae5c07c9fc8c89f806714d9a2aa130737c7f67ec2d8b95fdbdd2cd86611cae673165955a3a

Download Submit
memory/1976-15-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1976-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1984-0-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1984-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download