90783fcd245b0e1480c56b8b5a3e00eb829e9e30c58f191b947c2cb5b15ad7f6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 17:26

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General

Target

2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe
Size

50KB
MD5

1936e53ff34c2c2751a7776784f06494
SHA1

afedb3dd864d0b123f801a2011578942aa2935fb
SHA256

90783fcd245b0e1480c56b8b5a3e00eb829e9e30c58f191b947c2cb5b15ad7f6
SHA512

51c8000c73e3b7900af790cf8636b6dc27d556ecc9214f46cea2068a27d4dcc1172f3a5fc7d8550cdee5eeeab6afc1bea409ce71a53cbcc11b767a0955d21085
SSDEEP

1536:nP+4zs2cPszL3MOtEvwDpj4Hy7B3g9CWuAxWLP:m4Q2ckzIOtEvwDpj4HY/

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1264-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e970-13.dat	CryptoLocker_rule2
behavioral2/memory/632-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1264-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/632-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1264-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/632-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1264-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000300000001e970-13.dat	UPX
behavioral2/memory/632-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1264-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/632-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
632	misid.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1264-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000300000001e970-13.dat	upx
behavioral2/memory/632-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1264-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/632-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1264 wrote to memory of 632	1264	2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe	88
PID 1264 wrote to memory of 632	1264	2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe	88
PID 1264 wrote to memory of 632	1264	2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_1936e53ff34c2c2751a7776784f06494_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:632

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\misid.exe

Filesize
50KB

MD5
6aa342a3325bd7d803928e7fae8d8663

SHA1
e40ebd3cb2b4530fa1ecb2103c959533f4518edf

SHA256
86c2caf10fb22378848d56f6b1542b2272ddb9088a12097f89e7db89801054e9

SHA512
6a8effb523ce4344d90ca41aa61d06733a85e6981d4e99d3ac05e1a0f75d9ba61810301f961ec112c7745aa7a8520888f0e2c130bef08b6d8788e4a8a4c012ea

Download Submit
memory/632-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/632-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/632-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/632-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1264-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1264-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1264-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1264-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/1264-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download