c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357

Analysis

max time kernel
223s
max time network
248s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2022, 05:45

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General

Target

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
Size

201KB
MD5

3d3ad4451fe3dbbf4b65019c45350ebe
SHA1

b9ce92343985301e9fb9c9bbba3d7882d4d8c206
SHA256

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357
SHA512

c45a874c766ceb415106cc2d6a4f0325e62d1f5d34d4b6320a3d2ea4040c5a786fa6b83c674aa2242a7e119b8c114521009f7b8db40180f2b65baf2620780af1
SSDEEP

6144:K6RUQzD5g9q7hiQc6vxLX3vxq3w+XEUZAVIr9:KVQz1vNiQJ9X3v431EBVe

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\11de6622.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\11de662 = "C:\\11de6622\\11de6622.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*1de662 = "C:\\11de6622\\11de6622.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\11de6622 = "C:\\Users\\Admin\\AppData\\Roaming\\11de6622.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*1de6622 = "C:\\Users\\Admin\\AppData\\Roaming\\11de6622.exe"	explorer.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
52	myexternalip.com
42	ip-addr.es

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4324 set thread context of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3912	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
2976	explorer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 4324 wrote to memory of 3912	4324	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	82
PID 3912 wrote to memory of 2976	3912	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	83
PID 3912 wrote to memory of 2976	3912	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	83
PID 3912 wrote to memory of 2976	3912	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	83
PID 2976 wrote to memory of 3956	2976	explorer.exe	84
PID 2976 wrote to memory of 3956	2976	explorer.exe	84
PID 2976 wrote to memory of 3956	2976	explorer.exe	84

C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
"C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
  "C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe"
  2⤵
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3912
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\syswow64\explorer.exe"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2976
  - - C:\Windows\SysWOW64\svchost.exe
      -k netsvcs
      4⤵
      PID:3956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2976-137-0x0000000000C10000-0x0000000000C35000-memory.dmp

Filesize
148KB

Download
memory/3912-136-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3956-139-0x00000000012F0000-0x0000000001315000-memory.dmp

Filesize
148KB

Download
memory/4324-132-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4324-134-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download