88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43

General

Target

88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43.dll
Size

240KB
MD5

9c002e312899514d8b8a83d2a846aa00
SHA1

68b201544a1dfc272ffe0d1f14638d3ba99eb925
SHA256

88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43
SHA512

869765f8c1400849b61ea294440c6725c286b0f2a4ed881c7d3a80717cf0b49928ee303d125388e87ad052990fe720dab35eae3763a53f396cfa0c48961d512a
SSDEEP

6144:65r3lV6n42+3WSKhxD8RVo2rcaGKNqAwyotp2a:6C+3xWDY9IpKNTwyox

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 7 IoCs

Processes:

rundll32.exe

flow pid process

3 1208 rundll32.exe
5 1208 rundll32.exe
6 1208 rundll32.exe
7 1208 rundll32.exe
8 1208 rundll32.exe
10 1208 rundll32.exe
11 1208 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

flow	pid	process
3	1208	rundll32.exe
5	1208	rundll32.exe
6	1208	rundll32.exe
7	1208	rundll32.exe
8	1208	rundll32.exe
10	1208	rundll32.exe
11	1208	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Platform = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43.dll\",Erase"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

1208 rundll32.exe
1208 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1208 rundll32.exe

pid	process
1208	rundll32.exe
1208	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1208	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe
PID 2304 wrote to memory of 1208	2304	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\88743aa06c89a9bdbd17328d4fa424f1d4639e504b5d55da3889bcdf67ec5f43.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1208-0-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/1208-1-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/1208-4-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads