a6d9cbf1822085f472482f543c9144f70a251ac5053f4c7d0a959adec7fb25f7

General

Target

f5031ec6feb7689ffbc165c4286b4860.dll
Size

143KB
MD5

f5031ec6feb7689ffbc165c4286b4860
SHA1

db0739e3ea46c6af151226a44ed90635ae943d19
SHA256

a6d9cbf1822085f472482f543c9144f70a251ac5053f4c7d0a959adec7fb25f7
SHA512

95f46e9e303a9050067ad0e087023f3310dc01a45e4e6e4762554bb8ff89e728cfcdd1e9cbc2b885f8f20fce6e1a9424e0165827b38e8441763db8e450a4699c
SSDEEP

3072:fuyWfGY25kZOwy/cG+gsuFoCU6JtYXSqEL8K+sP2BuHJTaNlhfVNq:6LxZI/cGJsuFHVnYCN+sP2BuHJON7fVE

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 11 IoCs

flow	pid	Process
3	2764	rundll32.exe
5	2764	rundll32.exe
6	2764	rundll32.exe
7	2764	rundll32.exe
8	2764	rundll32.exe
9	2764	rundll32.exe
12	2764	rundll32.exe
13	2764	rundll32.exe
14	2764	rundll32.exe
16	2764	rundll32.exe
17	2764	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

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\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows\CurrentVersion\Run\gBMP = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f5031ec6feb7689ffbc165c4286b4860.dll\",GetBMP"	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

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

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

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2764	rundll32.exe
2764	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28
PID 2536 wrote to memory of 2764	2536	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f5031ec6feb7689ffbc165c4286b4860.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f5031ec6feb7689ffbc165c4286b4860.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:2764

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/2764-0-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-1-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-5-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-6-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-7-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-8-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-12-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download
memory/2764-15-0x0000000010000000-0x000000001006D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads