b332bbe4dcb59a97cb405c5faf1d90bf0c61f183fcbd0842bdb4edbbaf701dd0

Analysis

max time kernel
120s
max time network
144s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 03:22

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General

Target

263e57024e38d40170ec2ef3068a10a9.exe
Size

27KB
MD5

263e57024e38d40170ec2ef3068a10a9
SHA1

3e0ae44e3493f7e4a80ae724650ab259bdb44535
SHA256

b332bbe4dcb59a97cb405c5faf1d90bf0c61f183fcbd0842bdb4edbbaf701dd0
SHA512

d3b45c1b2d947f9b07847e79cce7cf0e8e55e2480334ffdda6953fe89ca99e3ede980d72a4a194fea46ce9843629b9230c0e21d93304dee66758772604840b56
SSDEEP

768:Q8/vuzm4DH+4U+CSWX34wF4jCFy1CikZcKTs:VvgdDH+4zCSWX34wFWCFy1CPZc

Score

8^/10

evasion persistence

Malware Config

Signatures

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2804	netsh.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\mailmsg32 = "rundll32.exe mailmsg32.dll,egah"	263e57024e38d40170ec2ef3068a10a9.exe

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\8494019b.dll	263e57024e38d40170ec2ef3068a10a9.exe
File opened for modification	C:\Windows\SysWOW64\8494019b.dll	263e57024e38d40170ec2ef3068a10a9.exe
File created	C:\Windows\SysWOW64\mailmsg32.dll	263e57024e38d40170ec2ef3068a10a9.exe
File opened for modification	C:\Windows\SysWOW64\mailmsg32.dll	263e57024e38d40170ec2ef3068a10a9.exe
File created	C:\Windows\SysWOW64\3804b62b.dll	263e57024e38d40170ec2ef3068a10a9.exe
File opened for modification	C:\Windows\SysWOW64\3804b62b.dll	263e57024e38d40170ec2ef3068a10a9.exe
File created	C:\Windows\SysWOW64\447677be.dll	263e57024e38d40170ec2ef3068a10a9.exe
File opened for modification	C:\Windows\SysWOW64\447677be.dll	263e57024e38d40170ec2ef3068a10a9.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2740	sc.exe
2776	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2804	2716	263e57024e38d40170ec2ef3068a10a9.exe	27
PID 2716 wrote to memory of 2804	2716	263e57024e38d40170ec2ef3068a10a9.exe	27
PID 2716 wrote to memory of 2804	2716	263e57024e38d40170ec2ef3068a10a9.exe	27
PID 2716 wrote to memory of 2804	2716	263e57024e38d40170ec2ef3068a10a9.exe	27
PID 2716 wrote to memory of 2740	2716	263e57024e38d40170ec2ef3068a10a9.exe	30
PID 2716 wrote to memory of 2740	2716	263e57024e38d40170ec2ef3068a10a9.exe	30
PID 2716 wrote to memory of 2740	2716	263e57024e38d40170ec2ef3068a10a9.exe	30
PID 2716 wrote to memory of 2740	2716	263e57024e38d40170ec2ef3068a10a9.exe	30
PID 2716 wrote to memory of 2776	2716	263e57024e38d40170ec2ef3068a10a9.exe	32
PID 2716 wrote to memory of 2776	2716	263e57024e38d40170ec2ef3068a10a9.exe	32
PID 2716 wrote to memory of 2776	2716	263e57024e38d40170ec2ef3068a10a9.exe	32
PID 2716 wrote to memory of 2776	2716	263e57024e38d40170ec2ef3068a10a9.exe	32

C:\Users\Admin\AppData\Local\Temp\263e57024e38d40170ec2ef3068a10a9.exe
"C:\Users\Admin\AppData\Local\Temp\263e57024e38d40170ec2ef3068a10a9.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\netsh.exe
  C:\Windows\system32\netsh.exe firewall add portopening TCP 1654 messenger
  2⤵
  - Modifies Windows Firewall
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mailmsg32 type= share start= auto DisplayName= "Mail Message Objects DLL" group= "Event Log" binPath= "rundll32.exe C:\Windows\system32\mailmsg32.dll,egah"
  2⤵
  - Launches sc.exe
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mailmsg32 "Mail Message Objects DLL"
  2⤵
  - Launches sc.exe
  PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\447677be.dll

Filesize
1B

MD5
93b885adfe0da089cdf634904fd59f71

SHA1
5ba93c9db0cff93f52b521d7420e43f6eda2784f

SHA256
6e340b9cffb37a989ca544e6bb780a2c78901d3fb33738768511a30617afa01d

SHA512
b8244d028981d693af7b456af8efa4cad63d282e19ff14942c246e50d9351d22704a802a71c3580b6370de4ceb293c324a8423342557d4e5c38438f0e36910ee

Download Submit
memory/2716-0-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2716-12-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads