76853f3aeea8838c29a807feb94f8ffba9bdef532b0986fae464db548b798bcf

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 00:43

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General

Target

2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe
Size

46KB
MD5

15ff4caaa5aab79e7b478adbfb343dba
SHA1

48e41479bf17d018555d0b248ca9cc682dfe3929
SHA256

76853f3aeea8838c29a807feb94f8ffba9bdef532b0986fae464db548b798bcf
SHA512

38b4267cf79c88ceef85175dfa6f94d1bad0c69c4525654f5bce374029c5d731076d9dafd7b9a294ebed2048729f9d482513fc966a25b6fa97c2641fa15e1358
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hDu:bgGYcA/53GAA6y37nby

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023223-12.dat	CryptoLocker_rule2

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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
760	hasfj.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 660 wrote to memory of 760	660	2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe	88
PID 660 wrote to memory of 760	660	2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe	88
PID 660 wrote to memory of 760	660	2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_15ff4caaa5aab79e7b478adbfb343dba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:660
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:760

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\hasfj.exe

Filesize
46KB

MD5
7eef71cf97b1b3fd1ae6fc9f980dd8ea

SHA1
7a19d5d30c25bb8ac1b0753497710e97ab1dfde0

SHA256
1081a25480f085bf7243860256528e8a35275a95e74e1b52761ec5a05d19f3f5

SHA512
288b2716fa4dab82c9af5e6de35c9163b762ada4f07002eba6a4635460e1e361ac28d6cdb14302735e012346be8369bbb2838535879d80c1153f25dabad806ea

Download Submit
memory/660-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/660-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/660-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/760-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/760-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download