4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc

General

Target

4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc.dll
Size

134KB
MD5

df8643701bd8d813ac0b5bf01ace46b4
SHA1

9c68c7f4eb2ac4026ba3f8389ab46d61c2085370
SHA256

4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc
SHA512

0edbc4dc3378b21ea0588164969c4ac88fb468d05bbd517edb083401709ab95708b29f37ff356222046f69c8777d48671d6914e4b9effcfe7b49039ee4ab3ae3
SSDEEP

3072:Mz9IOfAdv1qacKNQTtP0KuYjbi7Gp0N9DL8:MzOOfAdv1XaPduYjbEf8

Score

8^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
4	2984	rundll32.exe
5	2984	rundll32.exe
6	2984	rundll32.exe
7	2984	rundll32.exe
9	2984	rundll32.exe
10	2984	rundll32.exe
13	2984	rundll32.exe
14	2984	rundll32.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\flate = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc.dll\",inflate"	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)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2984-3-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2984-2-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2984-1-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2984-4-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2984-9-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2984-10-0x0000000010000000-0x000000001004B000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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	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 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

pid	Process
2984	rundll32.exe
2984	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2984	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30
PID 1480 wrote to memory of 2984	1480	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a0ddb06b4662018f7013a9f377e721b8052b8450ce6e30e9a3ec05ca206e7fc.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2984

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2984-3-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-2-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-1-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-0-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-4-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-9-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2984-10-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads