344f23d14158fe1de2b1e164833f75879bfb53cdf94952b13913e9ae79e4a1d9

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
27/03/2024, 20:38

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General

Target

2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
Size

66KB
MD5

8450f8a335a9b48f72e854364004d030
SHA1

18882ad8e2a84bfcf55faf5a8d40f20ba9ee79bf
SHA256

344f23d14158fe1de2b1e164833f75879bfb53cdf94952b13913e9ae79e4a1d9
SHA512

72a8b8d8c3e561d83c86921acc369501a9a43a6bd4e732680e3aff4b48856f71e853a8768138c889cd2df0b96390edf665e02bd60fd76ffd8fd38727365ff10f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLDs:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121c5-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121c5-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2816	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1108	2024-03-27_8450f8a335a9b48f72e854364004d030_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
1108	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
2816	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 2816	1108	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	28
PID 1108 wrote to memory of 2816	1108	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	28
PID 1108 wrote to memory of 2816	1108	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	28
PID 1108 wrote to memory of 2816	1108	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1108
- 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:2816

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
66KB

MD5
0f821042daf78c67f53527d539934c3f

SHA1
47ea2e2f9964d4438c806f00a411c12dc625b3c6

SHA256
dde40eb7e607c9043d3b62f475f80033ccf65807710209e6e2fa36faa7e6926d

SHA512
57a3a131d5e6bc77f65f2a879f6bba8a20b27acb9ed592323d99dbdb2af5758fea1777fa98cbdcffd73858a5d4a67614c86d5bdde80e735cb97694b0d7338730

Download Submit
memory/1108-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1108-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1108-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2816-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download