cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476

General

Target

cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476.dll
Size

135KB
MD5

ed4dced3ec044d7f108f09f205f07218
SHA1

a50c68d387e4365eadec166d8aa577d3274b6e7d
SHA256

cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476
SHA512

12c93fb50c20562582e7422932d4e8baa64053ec40b4e38e05124c778dd7b5d82b89460b98119aad00d13937034ec8d15e72a47025394d24e3518e74e28b2964
SSDEEP

1536:1RNinzmWJgrDquOUAyPkXgeJI6g8LHe07Uee41pUcQRyXAHJ3HyNa8s64PpW2xb:zNYOrFAyugeJOym41pLLQN+a8O8Cb

Score

8^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

flow	pid	Process
3	2776	rundll32.exe
5	2776	rundll32.exe
6	2776	rundll32.exe
7	2776	rundll32.exe
8	2776	rundll32.exe
9	2776	rundll32.exe
10	2776	rundll32.exe
11	2776	rundll32.exe
13	2776	rundll32.exe
14	2776	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\SHR = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476.dll\",Scheduler"	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\z:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	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

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
2776	rundll32.exe
2776	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30
PID 2824 wrote to memory of 2776	2824	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdbb0d62b194c098e6a59b2dbe15de7837c1705e2de72abc076497536dbb2476.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:2776

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/2776-0-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-1-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-2-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-3-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-4-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-8-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download
memory/2776-9-0x0000000010000000-0x000000001004C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads