b3af67e40fe979a3be7f1813e30792ab60c48b63ff64413e63da7eb609824bb8

Analysis

max time kernel
102s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/08/2024, 02:21

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General

Target

cda4f17dc5842ff1130d56d64f567f30N.exe
Size

152KB
MD5

cda4f17dc5842ff1130d56d64f567f30
SHA1

0c2040e62950bc9eeb68f7afb8388855e8a77d2b
SHA256

b3af67e40fe979a3be7f1813e30792ab60c48b63ff64413e63da7eb609824bb8
SHA512

fd5654e673b9baad2db1d6c8867871379d94c153e6c351b6c204dfb65f712a7e97d40a252ee8fdad7acf1f0a7b3ff50211fdcb97fb771af5ade38c1c29f848fc
SSDEEP

1536:rGYDPjecpE1gegznLU1V+FkOzvZoAUp8aHk+EfesrSd7IfHSp3D8DxNE1lMBV6ys:CCPjecmaxiViUp80s+sfHUzO0MBV6rH

Score

7^/10

discovery upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1832	navu32.exe

Executes dropped EXE 2 IoCs

pid	Process
1832	navu32.exe
4000	navu32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3192-0-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral2/files/0x0008000000023506-5.dat	upx
behavioral2/files/0x0008000000023506-10.dat	upx
behavioral2/memory/3192-13-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral2/memory/1832-14-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral2/memory/4000-15-0x0000000000400000-0x0000000000427000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\navu32.exe	cda4f17dc5842ff1130d56d64f567f30N.exe
File created	C:\Windows\SysWOW64\navu32.exe	cda4f17dc5842ff1130d56d64f567f30N.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	cda4f17dc5842ff1130d56d64f567f30N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	navu32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4000	navu32.exe
4000	navu32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	navu32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3192 wrote to memory of 1832	3192	cda4f17dc5842ff1130d56d64f567f30N.exe	86
PID 3192 wrote to memory of 1832	3192	cda4f17dc5842ff1130d56d64f567f30N.exe	86
PID 3192 wrote to memory of 1832	3192	cda4f17dc5842ff1130d56d64f567f30N.exe	86

C:\Users\Admin\AppData\Local\Temp\cda4f17dc5842ff1130d56d64f567f30N.exe
"C:\Users\Admin\AppData\Local\Temp\cda4f17dc5842ff1130d56d64f567f30N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3192
- C:\Windows\SysWOW64\navu32.exe
  C:\Windows\system32\navu32.exe -d "C:\Users\Admin\AppData\Local\Temp\cda4f17dc5842ff1130d56d64f567f30N.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1832

C:\Windows\SysWOW64\navu32.exe
C:\Windows\SysWOW64\navu32.exe -v
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4000

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:\Windows\SysWOW64\navu32.exe

Filesize
152KB

MD5
00914c3d9c8c98643217ff6492761843

SHA1
6a895e11307be5f79c08e2b78eeb2851e5f056ff

SHA256
5ebcca26f471c269cdb1c326ef0766a99d29f196390c89d118d81463c5a33f32

SHA512
fd5d099a7d0d133f77a7bc5b2e730f1e8c0c23a37ecb85786f33c3653bfc75f8c015b46fbc318541f1b0d500c777644ee39c2905c17ef17342dc0c9dc3b2c056

Download Submit
C:\Windows\SysWOW64\navu32.exe

Filesize
152KB

MD5
cda4f17dc5842ff1130d56d64f567f30

SHA1
0c2040e62950bc9eeb68f7afb8388855e8a77d2b

SHA256
b3af67e40fe979a3be7f1813e30792ab60c48b63ff64413e63da7eb609824bb8

SHA512
fd5654e673b9baad2db1d6c8867871379d94c153e6c351b6c204dfb65f712a7e97d40a252ee8fdad7acf1f0a7b3ff50211fdcb97fb771af5ade38c1c29f848fc

Download Submit
memory/1832-14-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3192-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3192-13-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4000-15-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download