dbaa51be35c8b96d64996ff284c2ce2491909e888982f621bb0cb9d465e08e8e

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 08:42

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General

Target

2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe
Size

50KB
MD5

641dbed814788b638a80c3559adea02b
SHA1

0834786a404126912fe672bea51ed9e1fba50599
SHA256

dbaa51be35c8b96d64996ff284c2ce2491909e888982f621bb0cb9d465e08e8e
SHA512

681180c1422c0c7fe316ff5a05a67a5f29167d5b9aaaa1276ef882ff2a8841d03681e255e8018aa871c561684b33fd4624b58fdc4be88d0c2748add3ffdb2c3f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIx:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000015d59-14.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000015d59-14.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1976	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2064	2024-04-27_641dbed814788b638a80c3559adea02b_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
2064	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe
1976	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 1976	2064	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	28
PID 2064 wrote to memory of 1976	2064	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	28
PID 2064 wrote to memory of 1976	2064	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	28
PID 2064 wrote to memory of 1976	2064	2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_641dbed814788b638a80c3559adea02b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2064
- 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: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

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
51KB

MD5
8c803322229190ae397ea1a565a8ff9e

SHA1
e7bf33346ca2c899d49772113974957ea37ba117

SHA256
12511e75dbb6d1448198d2cd68f30acf71e9a96c3a427941ab7be8d3f68b4aab

SHA512
5592ec85afc812ab918a3c7bf4c3cc09fef092e07c776c902fdd217a19cab08990a9979b1ebfd069471dbb293f173e315c6e2a9d8fa478f1428f2f828679173b

Download Submit
memory/1976-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2064-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2064-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2064-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download