1cfe56a375b4f9d16b8ee64519f7591cfa8ed76e122a6cc175c9d820d573fd95

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 18:31

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General

Target

2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
Size

65KB
MD5

726088d791e9d5d3f6a79cc0883083a8
SHA1

866ef3257052cf2ce1552c9d48291f5ce17a2943
SHA256

1cfe56a375b4f9d16b8ee64519f7591cfa8ed76e122a6cc175c9d820d573fd95
SHA512

ba8877ab198e8c32d20522ae525114364b4395a4cf47a98f36639ecefe2b7466a529fc4446ff99d62cad20dbb3220a719d172534d5da7d27fa4dc402116b3a88
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29k:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7i

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013a88-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013a88-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2216	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
2216	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 2216	1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	28
PID 1636 wrote to memory of 2216	1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	28
PID 1636 wrote to memory of 2216	1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	28
PID 1636 wrote to memory of 2216	1636	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2216

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\hurok.exe

Filesize
65KB

MD5
24544019bbef15e7f3f9c11838f2ef89

SHA1
5f22843f7a828a5bf2e1af3a8daea6f077ae034b

SHA256
9c0eb11f6d1124ff52af9adf3dfed458bcca88cc5524154bc1f3c8f0ee295d54

SHA512
e1e1253728ad9181c9ff91d65d4ae9a2a57ea495d493d78105ec80e493b98aca71d9e34ac91628e1a18bf61c685921739f32ee7df6a5527fd1a853b57890166d

Download Submit
memory/1636-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1636-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1636-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2216-23-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download