24806c1ad3189991a6db800d65aed0c122a1454eba41b9ecc17164e169cf9af0

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 12:49

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General

Target

2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe
Size

62KB
MD5

840b8290a1126f8f403e2fe1635f68c6
SHA1

94fa1b1cafc4ddbaaf0b96c73ae04490c3c00b5b
SHA256

24806c1ad3189991a6db800d65aed0c122a1454eba41b9ecc17164e169cf9af0
SHA512

127f7000e4741f5c451a908b92ecd0c6f5347e1fae581ae80e58aeeae07a477981800691f5d73ac9623c019e5c55688d506c6109fd7d3892dfe92a059023bdb5
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29329:aq7tdgI2MyzNORQtOflIwoHNV2XBFV70

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1408	hurok.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 1408	4828	2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe	88
PID 4828 wrote to memory of 1408	4828	2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe	88
PID 4828 wrote to memory of 1408	4828	2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_840b8290a1126f8f403e2fe1635f68c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
62KB

MD5
5b309950561f67d491d0db567d5bc054

SHA1
22f2148dfc866eb906c2b950466a80a322914b69

SHA256
b0fd84a9a58d50b259a67ce84d8e003b0ded14fbe99c60b18c0239974b9cb8fd

SHA512
21027d5eb773ecab68c58b288de0636f83b190b516366476a20fcf004e964c35f3dd162afe62afebbad3f4fb6d9bf5876db44fe38771b8cd34aeae45022a83e1

Download Submit
memory/1408-22-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/4828-0-0x0000000002170000-0x0000000002176000-memory.dmp

Filesize
24KB

Download
memory/4828-1-0x0000000002170000-0x0000000002176000-memory.dmp

Filesize
24KB

Download
memory/4828-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download