9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29/08/2024, 01:08

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General

Target

9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
Size

40KB
MD5

4a683b19df48d3d0648687e2d5a9aa4b
SHA1

d801e10fe987f448dcaef191f5f3bfe08bdbe158
SHA256

9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d
SHA512

f90b1264924c3efab1836c417b0478d9ffca9cb81123c61ca7bdac7d16dc63e6ec121474f79f84a0261271f5b46409fb3688f7e791ecc392ac34ff215ada08a7
SSDEEP

768:TeSXrX8ltlmge8gzRB0Tv04VZcwFqCqDfQJ:TfrezZg92TvZmzf+

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2516	lanmanwrk.exe

Loads dropped DLL 6 IoCs

pid	Process
2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
2496	WerFault.exe
2496	WerFault.exe
2496	WerFault.exe
2496	WerFault.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral1/files/0x00090000000175e4-3.dat	upx
behavioral1/memory/2360-9-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral1/memory/2516-15-0x0000000000400000-0x000000000040D000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\iexchg.dll	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
File created	C:\Windows\SysWOW64\lanmanwrk.exe	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
File opened for modification	C:\Windows\SysWOW64\lanmanwrk.exe	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2496	2516	WerFault.exe	31

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	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lanmanwrk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2516	2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe	31
PID 2360 wrote to memory of 2516	2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe	31
PID 2360 wrote to memory of 2516	2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe	31
PID 2360 wrote to memory of 2516	2360	9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe	31
PID 2516 wrote to memory of 2496	2516	lanmanwrk.exe	32
PID 2516 wrote to memory of 2496	2516	lanmanwrk.exe	32
PID 2516 wrote to memory of 2496	2516	lanmanwrk.exe	32
PID 2516 wrote to memory of 2496	2516	lanmanwrk.exe	32

C:\Users\Admin\AppData\Local\Temp\9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe
"C:\Users\Admin\AppData\Local\Temp\9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\lanmanwrk.exe
  C:\Windows\System32\lanmanwrk.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 100
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2496

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

\Windows\SysWOW64\lanmanwrk.exe

Filesize
40KB

MD5
4a683b19df48d3d0648687e2d5a9aa4b

SHA1
d801e10fe987f448dcaef191f5f3bfe08bdbe158

SHA256
9dd1cb0c54598b8b22879c4a919690c5517d95a31e411af08392e5443d48334d

SHA512
f90b1264924c3efab1836c417b0478d9ffca9cb81123c61ca7bdac7d16dc63e6ec121474f79f84a0261271f5b46409fb3688f7e791ecc392ac34ff215ada08a7

Download Submit
memory/2360-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2360-9-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2516-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download