b3af67e40fe979a3be7f1813e30792ab60c48b63ff64413e63da7eb609824bb8

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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
2272	navu32.exe

Executes dropped EXE 2 IoCs

pid	Process
2272	navu32.exe
1908	navu32.exe

Loads dropped DLL 2 IoCs

pid	Process
1628	cda4f17dc5842ff1130d56d64f567f30N.exe
1628	cda4f17dc5842ff1130d56d64f567f30N.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1628-0-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/files/0x0009000000016c1f-5.dat	upx
behavioral1/files/0x0009000000016c1f-11.dat	upx
behavioral1/memory/2272-18-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/1628-20-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/2272-21-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/1908-22-0x0000000000400000-0x0000000000427000-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 1 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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1908	navu32.exe
1908	navu32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	navu32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2272	1628	cda4f17dc5842ff1130d56d64f567f30N.exe	30
PID 1628 wrote to memory of 2272	1628	cda4f17dc5842ff1130d56d64f567f30N.exe	30
PID 1628 wrote to memory of 2272	1628	cda4f17dc5842ff1130d56d64f567f30N.exe	30
PID 1628 wrote to memory of 2272	1628	cda4f17dc5842ff1130d56d64f567f30N.exe	30

C:\Users\Admin\AppData\Local\Temp\cda4f17dc5842ff1130d56d64f567f30N.exe
"C:\Users\Admin\AppData\Local\Temp\cda4f17dc5842ff1130d56d64f567f30N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- 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
  PID:2272

C:\Windows\SysWOW64\navu32.exe
C:\Windows\SysWOW64\navu32.exe -v
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1908

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
cda4f17dc5842ff1130d56d64f567f30

SHA1
0c2040e62950bc9eeb68f7afb8388855e8a77d2b

SHA256
b3af67e40fe979a3be7f1813e30792ab60c48b63ff64413e63da7eb609824bb8

SHA512
fd5654e673b9baad2db1d6c8867871379d94c153e6c351b6c204dfb65f712a7e97d40a252ee8fdad7acf1f0a7b3ff50211fdcb97fb771af5ade38c1c29f848fc

Download Submit
\Windows\SysWOW64\navu32.exe

Filesize
152KB

MD5
86679d423a1325b521ef47c60f77b841

SHA1
ac52d8987369a5a95c12acda4eaf43d7349aae0b

SHA256
6463e7f0ca1ecd77eff68f8ae0b0aade9364e59e24bc5d4fc1d5d0695020fc71

SHA512
92fc21689b48ea02c50ac25afaac316512c91851286c50e2ac256434ad3178f05810d23d89704cbb53da61f3645e2bdca322af916bab94a4025994159b1e100f

Download Submit
memory/1628-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1628-17-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/1628-16-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/1628-20-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1908-22-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2272-18-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2272-21-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download