7f709a833b58c4401cfbdc000fa34a876c50b64c3f890a3c173f0204db0facff

Analysis

max time kernel
133s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/12/2023, 14:01

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General

Target

b4b0b78f5da65d78fdb1187baf209855.dll
Size

2.5MB
MD5

b4b0b78f5da65d78fdb1187baf209855
SHA1

ad1bdca57e8725abe36e505afdeb97c772d8e212
SHA256

7f709a833b58c4401cfbdc000fa34a876c50b64c3f890a3c173f0204db0facff
SHA512

3e01817ef0ef6c11e5f479b56dde7cd27bbd52cc17c13e61da9d935f514117e1b265e5db3c129c719488e3408b6d79c8861cdee6f5294cdf9bdfae7cdc8120c6
SSDEEP

24576:L2A3h2k21FoIhQ6JgHBZgEl4HE82FwLh5DM/++5v5DyhFVCaRCR27il+aj:6hNnkZgnHaFEh5Dqj5v5uhFVCA++aj

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
50	3556	rundll32.exe

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	e584d60.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1056	4356	WerFault.exe	100

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 3556	4596	rundll32.exe	90
PID 4596 wrote to memory of 3556	4596	rundll32.exe	90
PID 4596 wrote to memory of 3556	4596	rundll32.exe	90
PID 3556 wrote to memory of 4356	3556	rundll32.exe	100
PID 3556 wrote to memory of 4356	3556	rundll32.exe	100
PID 3556 wrote to memory of 4356	3556	rundll32.exe	100

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4b0b78f5da65d78fdb1187baf209855.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4b0b78f5da65d78fdb1187baf209855.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3556
- - C:\Users\Admin\AppData\Local\Temp\e584d60.exe
    "C:\Users\Admin\AppData\Local\Temp\e584d60.exe"
    3⤵
    - Executes dropped EXE
    PID:4356
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4356 -s 804
      4⤵
      Program crash
      PID:1056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4356 -ip 4356
1⤵
PID:4820

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\e584d60.exe

Filesize
21KB

MD5
858939a54a0406e5be7220b92b6eb2b3

SHA1
da24c0b6f723a74a8ec59e58c9c0aea3e86b7109

SHA256
a30f30a109cb78d5eb1969f6c13f01a1e0a5f07b7ad8b133f5d2616223c1ce0a

SHA512
8875d1e43ea59314695747796894a2f171e92f7b04024dbc529af1497331489e279cd06ea03061288089d2f07ad437178b9d62f0bae2e16ae0b95c5681569401

Download Submit
memory/3556-12-0x0000000003A90000-0x0000000004F44000-memory.dmp

Filesize
20.7MB

Download
memory/3556-14-0x0000000004FF0000-0x000000000507E000-memory.dmp

Filesize
568KB

Download
memory/3556-3-0x0000000003940000-0x00000000039EF000-memory.dmp

Filesize
700KB

Download
memory/3556-4-0x00000000039F0000-0x0000000003A8B000-memory.dmp

Filesize
620KB

Download
memory/3556-7-0x00000000039F0000-0x0000000003A8B000-memory.dmp

Filesize
620KB

Download
memory/3556-8-0x0000000000400000-0x0000000000687000-memory.dmp

Filesize
2.5MB

Download
memory/3556-11-0x00000000039F0000-0x0000000003A8B000-memory.dmp

Filesize
620KB

Download
memory/3556-0-0x0000000002EC0000-0x0000000002EC1000-memory.dmp

Filesize
4KB

Download
memory/3556-2-0x0000000003880000-0x0000000003935000-memory.dmp

Filesize
724KB

Download
memory/3556-17-0x0000000004FF0000-0x000000000507E000-memory.dmp

Filesize
568KB

Download
memory/3556-13-0x0000000004F50000-0x0000000004FE4000-memory.dmp

Filesize
592KB

Download
memory/3556-18-0x0000000001200000-0x0000000001204000-memory.dmp

Filesize
16KB

Download
memory/3556-19-0x0000000001210000-0x0000000001216000-memory.dmp

Filesize
24KB

Download
memory/3556-1-0x00000000035D0000-0x00000000037BD000-memory.dmp

Filesize
1.9MB

Download
memory/4356-34-0x0000000000860000-0x0000000000868000-memory.dmp

Filesize
32KB

Download
memory/4356-35-0x0000000072A40000-0x00000000731F0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-37-0x0000000072A40000-0x00000000731F0000-memory.dmp

Filesize
7.7MB

Download