cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00e

General

Target

cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe
Size

221KB
MD5

bea46091b01466823436c3f717261ae0
SHA1

cfdbb7ff82b47ff8f076ceb8d0ef5c99f296b73d
SHA256

cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00e
SHA512

5af35259991ee4e2c38f1f4d78531a0dca3e7391c37e4b3988859b04be6362b8926b156bcb57d18cc1041832b20dd34f8c9196402ee6c6c7acd36bf780440a35
SSDEEP

6144:x2vnAaPNJT3lhZ/8tgt79Jad3vqaFlgi:inAONJJ/CgZ65rX

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4508	gpkwd.exe

Executes dropped EXE 2 IoCs

pid	Process
4508	gpkwd.exe
808	frzhu.exe

Loads dropped DLL 1 IoCs

pid	Process
808	frzhu.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SHR = "c:\\Program Files\\uqobf\\frzhu.exe \"c:\\Program Files\\uqobf\\frzhu.dll\",Scheduler"	frzhu.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)	\??\k:	frzhu.exe
File opened (read-only)	\??\s:	frzhu.exe
File opened (read-only)	\??\y:	frzhu.exe
File opened (read-only)	\??\z:	frzhu.exe
File opened (read-only)	\??\a:	frzhu.exe
File opened (read-only)	\??\e:	frzhu.exe
File opened (read-only)	\??\m:	frzhu.exe
File opened (read-only)	\??\o:	frzhu.exe
File opened (read-only)	\??\w:	frzhu.exe
File opened (read-only)	\??\q:	frzhu.exe
File opened (read-only)	\??\t:	frzhu.exe
File opened (read-only)	\??\g:	frzhu.exe
File opened (read-only)	\??\h:	frzhu.exe
File opened (read-only)	\??\i:	frzhu.exe
File opened (read-only)	\??\j:	frzhu.exe
File opened (read-only)	\??\n:	frzhu.exe
File opened (read-only)	\??\p:	frzhu.exe
File opened (read-only)	\??\u:	frzhu.exe
File opened (read-only)	\??\v:	frzhu.exe
File opened (read-only)	\??\b:	frzhu.exe
File opened (read-only)	\??\l:	frzhu.exe
File opened (read-only)	\??\r:	frzhu.exe
File opened (read-only)	\??\x:	frzhu.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	frzhu.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\uqobf\frzhu.dll	gpkwd.exe
File created	\??\c:\Program Files\uqobf\frzhu.exe	gpkwd.exe
File opened for modification	\??\c:\Program Files\uqobf\frzhu.exe	gpkwd.exe
File opened for modification	\??\c:\Program Files\uqobf	gpkwd.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	cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.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	gpkwd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	frzhu.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
2180	cmd.exe
1048	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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	frzhu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	frzhu.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1048	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
808	frzhu.exe
808	frzhu.exe
808	frzhu.exe
808	frzhu.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	808	frzhu.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4368	cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe
4508	gpkwd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4368 wrote to memory of 2180	4368	cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe	86
PID 4368 wrote to memory of 2180	4368	cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe	86
PID 4368 wrote to memory of 2180	4368	cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe	86
PID 2180 wrote to memory of 1048	2180	cmd.exe	88
PID 2180 wrote to memory of 1048	2180	cmd.exe	88
PID 2180 wrote to memory of 1048	2180	cmd.exe	88
PID 2180 wrote to memory of 4508	2180	cmd.exe	89
PID 2180 wrote to memory of 4508	2180	cmd.exe	89
PID 2180 wrote to memory of 4508	2180	cmd.exe	89
PID 4508 wrote to memory of 808	4508	gpkwd.exe	90
PID 4508 wrote to memory of 808	4508	gpkwd.exe	90
PID 4508 wrote to memory of 808	4508	gpkwd.exe	90

C:\Users\Admin\AppData\Local\Temp\cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe
"C:\Users\Admin\AppData\Local\Temp\cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4368
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gpkwd.exe "C:\Users\Admin\AppData\Local\Temp\cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2180
- - 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:1048
- - C:\Users\Admin\AppData\Local\Temp\gpkwd.exe
    C:\Users\Admin\AppData\Local\Temp\\gpkwd.exe "C:\Users\Admin\AppData\Local\Temp\cad9d89a39a1573d40214f23d59b72b03b035eed80a562022fc8dd88800df00eN.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4508
  - - \??\c:\Program Files\uqobf\frzhu.exe
      "c:\Program Files\uqobf\frzhu.exe" "c:\Program Files\uqobf\frzhu.dll",Scheduler C:\Users\Admin\AppData\Local\Temp\gpkwd.exe
      4⤵
      Executes dropped EXE
      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:808

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

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\uqobf\frzhu.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpkwd.exe

Filesize
221KB

MD5
166da264ae38d4753e08b3b9d87b3b6b

SHA1
819c19876fbd585760648617d06d829cc152f830

SHA256
d166ef93af8a764a6263027b66553e98e8542856d9e246f49335e7ab7c79a223

SHA512
f9030095568f19a5547f24a9273164c37b8ac60cde34bace7828d92da95cbbe875ac963989845328d2d01a1b585a15d08ddb7679a98dc162542108f6721f7f2b

Download Submit
\??\c:\Program Files\uqobf\frzhu.dll

Filesize
184KB

MD5
8859f0ae4f69bc4049501516bd8c161c

SHA1
9643d46047ad471ae12ae28b2d7baa734e84c9b2

SHA256
148721c8f81117bb8ec0b2586d511b771d0dbbc097c1b0d2e2cd2d778aeda872

SHA512
04e21600eb849eeafbacd0e4252fd4f858654e5782b606f691abee0aec0bab5f43a0e75e79f3a5d0f81af1affa7052fdc86f0e0d911224f01d0a115474e93e6a

Download Submit
memory/808-23-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/808-20-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/808-19-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/4368-4-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4368-0-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4368-1-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4368-2-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4508-8-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4508-15-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/4508-9-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads