d3fackloader | 3967b38f763b2e58b0679bc0178247b855c68d761187c71c2f1760b6882e473a

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2024, 15:47

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General

Target

Zoom_v_2.00.4.exe
Size

98.4MB
MD5

c0230d748e61819d9dfad0da03fe6ec8
SHA1

951154980d3ddd4101b8e09b11669cbedc86f979
SHA256

3967b38f763b2e58b0679bc0178247b855c68d761187c71c2f1760b6882e473a
SHA512

8ec3af6f3ebf50b5d8ae23e61f442837313b90531e395d8de59ef2aadb49d8200866a069292d6c3d1221416d7cf226ae8628119b468fb6b47687d0b2d1ab4afa
SSDEEP

3145728:0GeG/0W1Wp44zcEyJaETaCV7EulyhkYMndp:R1X1WpBDxC77jlvdb

Score

10^/10

d3fackloader discovery downloader loader

Malware Config

Signatures

D3fackloader
D3fackloader is a loader and downloader using Inno Setup.
loader downloader d3fackloader
D3fackloader family
d3fackloader

Executes dropped EXE 1 IoCs

pid	Process
4784	Zoom_v_2.00.4.tmp

Loads dropped DLL 1 IoCs

pid	Process
4784	Zoom_v_2.00.4.tmp

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Windows NT\21.txt	Zoom_v_2.00.4.tmp

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zoom_v_2.00.4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zoom_v_2.00.4.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 4784	3932	Zoom_v_2.00.4.exe	83
PID 3932 wrote to memory of 4784	3932	Zoom_v_2.00.4.exe	83
PID 3932 wrote to memory of 4784	3932	Zoom_v_2.00.4.exe	83
PID 4784 wrote to memory of 1788	4784	Zoom_v_2.00.4.tmp	96
PID 4784 wrote to memory of 1788	4784	Zoom_v_2.00.4.tmp	96
PID 4784 wrote to memory of 1788	4784	Zoom_v_2.00.4.tmp	96

C:\Users\Admin\AppData\Local\Temp\Zoom_v_2.00.4.exe
"C:\Users\Admin\AppData\Local\Temp\Zoom_v_2.00.4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Local\Temp\is-QLQTS.tmp\Zoom_v_2.00.4.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QLQTS.tmp\Zoom_v_2.00.4.tmp" /SL5="$701BC,102724573,140800,C:\Users\Admin\AppData\Local\Temp\Zoom_v_2.00.4.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" cmd /c 21.cmd
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-QLQTS.tmp\Zoom_v_2.00.4.tmp

Filesize
1.4MB

MD5
c8af661e4ba65db0dd0d87fb1ea5909c

SHA1
e2b66f5f530a1d521e881546dc87df6f0207900d

SHA256
acea8c07fd60afbd722de9e6074ac7a9e03d4d64a50692f77d30918d0d786992

SHA512
f9a9e06ca6723c655717a538b6b6cd23298b38daa7661896bc5300862975ad89e566fe40125aaa9596583473f00672b7d40d0eb6fe6b70295549d7225611c019

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RK3BS.tmp\idp.dll

Filesize
232KB

MD5
55c310c0319260d798757557ab3bf636

SHA1
0892eb7ed31d8bb20a56c6835990749011a2d8de

SHA256
54e7e0ad32a22b775131a6288f083ed3286a9a436941377fc20f85dd9ad983ed

SHA512
e0082109737097658677d7963cbf28d412dca3fa8f5812c2567e53849336ce45ebae2c0430df74bfe16c0f3eebb46961bc1a10f32ca7947692a900162128ae57

Download Submit
memory/3932-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3932-2-0x0000000000401000-0x0000000000417000-memory.dmp

Filesize
88KB

Download
memory/3932-17-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4784-7-0x0000000000400000-0x0000000000578000-memory.dmp

Filesize
1.5MB

Download
memory/4784-18-0x0000000000400000-0x0000000000578000-memory.dmp

Filesize
1.5MB

Download
memory/4784-32-0x0000000000400000-0x0000000000578000-memory.dmp

Filesize
1.5MB

Download