64ceda1fdba5d3c4eae4beab2e205cd1cfc7e31f06c9c0eba3d1f1c7a9c4cb70

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-09-2024 01:50

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General

Target

cc71d844883eb09ccb3017bb2d62fb10N.exe
Size

147KB
MD5

cc71d844883eb09ccb3017bb2d62fb10
SHA1

012dc373f5b47b2e460b8cd462ea83ae3a0ec6cb
SHA256

64ceda1fdba5d3c4eae4beab2e205cd1cfc7e31f06c9c0eba3d1f1c7a9c4cb70
SHA512

e0a4cae6f8fa598621a42fd102a559108d742aa5425177c964c98c79caab5c443327fa78700a7a87db12f8849fdb7b02a1a6cff2c3452dfe37dab36e3536621a
SSDEEP

3072:ASABNx6hb4RoI4yMIqyphIOfVP3otljtqWkBNp4u1kH8im:Al6ZiiOSP0BL4wZ

Score

8^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 9 IoCs

flow	pid	Process
4	2380	rundll32.exe
7	2380	rundll32.exe
8	2380	rundll32.exe
9	2380	rundll32.exe
10	2380	rundll32.exe
13	2380	rundll32.exe
14	2380	rundll32.exe
15	2380	rundll32.exe
17	2380	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000900000001749c-8.dat	acprotect

Deletes itself 1 IoCs

pid	Process
2072	rwzcc.exe

Executes dropped EXE 1 IoCs

pid	Process
2072	rwzcc.exe

Loads dropped DLL 4 IoCs

pid	Process
2380	rundll32.exe
2380	rundll32.exe
2380	rundll32.exe
2380	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

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000900000001749c-8.dat	upx
behavioral1/memory/2380-15-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/2380-16-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/2380-17-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/2380-22-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/2380-23-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral1/memory/2380-24-0x0000000010000000-0x0000000010024000-memory.dmp	upx

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ecgei\\beemunamb.dll\",DoVirusScan"	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)	\??\r:	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	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

System Location Discovery: System Language Discovery 1 TTPs 5 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	cc71d844883eb09ccb3017bb2d62fb10N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rwzcc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2512	cmd.exe
2108	PING.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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2108	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2380	rundll32.exe
2380	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	cc71d844883eb09ccb3017bb2d62fb10N.exe
2072	rwzcc.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2512	2524	cc71d844883eb09ccb3017bb2d62fb10N.exe	30
PID 2524 wrote to memory of 2512	2524	cc71d844883eb09ccb3017bb2d62fb10N.exe	30
PID 2524 wrote to memory of 2512	2524	cc71d844883eb09ccb3017bb2d62fb10N.exe	30
PID 2524 wrote to memory of 2512	2524	cc71d844883eb09ccb3017bb2d62fb10N.exe	30
PID 2512 wrote to memory of 2108	2512	cmd.exe	32
PID 2512 wrote to memory of 2108	2512	cmd.exe	32
PID 2512 wrote to memory of 2108	2512	cmd.exe	32
PID 2512 wrote to memory of 2108	2512	cmd.exe	32
PID 2512 wrote to memory of 2072	2512	cmd.exe	33
PID 2512 wrote to memory of 2072	2512	cmd.exe	33
PID 2512 wrote to memory of 2072	2512	cmd.exe	33
PID 2512 wrote to memory of 2072	2512	cmd.exe	33
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34
PID 2072 wrote to memory of 2380	2072	rwzcc.exe	34

C:\Users\Admin\AppData\Local\Temp\cc71d844883eb09ccb3017bb2d62fb10N.exe
"C:\Users\Admin\AppData\Local\Temp\cc71d844883eb09ccb3017bb2d62fb10N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\rwzcc.exe "C:\Users\Admin\AppData\Local\Temp\cc71d844883eb09ccb3017bb2d62fb10N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2108
- - \??\c:\rwzcc.exe
    c:\rwzcc.exe "C:\Users\Admin\AppData\Local\Temp\cc71d844883eb09ccb3017bb2d62fb10N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2072
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ecgei\beemunamb.dll",DoVirusScan c:\rwzcc.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      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:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\??\c:\ecgei\beemunamb.dll

Filesize
46KB

MD5
40257501b15ab70b2086d612926f598c

SHA1
535f7ceef59df4ec200fd543b81b5a0f5fb15cf2

SHA256
9619188ea685e15d82504d0e566187809080e5ca535dc3ad2ed0fdc986c94083

SHA512
ad6ec46bd6e4556bd8fd5afe409e4086ead6d65c724669ffd5a98ab3e9dbc185d41e66d00f935aa82d2b3e03bfe9b75cd09e2ce1de70c6343d3d62ba7d443a9b

Download Submit
\??\c:\rwzcc.exe

Filesize
147KB

MD5
1691c19cf46333ac2db330a310403880

SHA1
2a2d4b862ceec8fb1af608aae7031eafef4c287f

SHA256
f0fcd2e851ab772d8324b732b9d03d5dea9bfc63506a9d0bc112bdf211497f50

SHA512
9ef450eba4ecdb61918ca3f194d0f1adaf5bc97d0b60ba6372b84887b63eaef8b9198fc18445be25ac44ef14ad2a0166d425ef70f429e7ef0dd7d70b1bb0e17c

Download Submit
memory/2072-7-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2380-16-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-13-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-12-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-15-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-17-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-22-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-23-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2380-24-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/2512-4-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2524-2-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2524-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download