b1f57d44d0a76f993c9a452e87c59c328f1a3609a63cf1e5c255e11a0073e041

General

Target

a65060ed695f08888f938ffec8d83da0N.exe
Size

486KB
MD5

a65060ed695f08888f938ffec8d83da0
SHA1

a7bbc1e88bc1561aa42e830bfebbc49f63992903
SHA256

b1f57d44d0a76f993c9a452e87c59c328f1a3609a63cf1e5c255e11a0073e041
SHA512

1f439c9af8921045d1056046c65583caa3e4892841e4cb530d917e42f9ab7962ac047fe821b5ba1d8bcf5ef9b58b6d550a6a05a448851feb7c06f3e690af6e9e
SSDEEP

6144:g5u5eG44AeJ2ssftlVN+zBfGrSWm+omDAgQsSygGG2IszBAYD:Cu5eG4bsilNoGSJ+omDAdsWGLTVXD

Score

7^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
592	kenfd.exe

Executes dropped EXE 2 IoCs

pid	Process
592	kenfd.exe
2896	rbghyu.exe

Loads dropped DLL 7 IoCs

pid	Process
1948	cmd.exe
1948	cmd.exe
592	kenfd.exe
2896	rbghyu.exe
2896	rbghyu.exe
2896	rbghyu.exe
2896	rbghyu.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 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000e0000000162ed-1.dat	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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\wfl = "c:\\Program Files\\trntx\\rbghyu.exe \"c:\\Program Files\\trntx\\rbghyu.dll\",WriteErrorLog"	rbghyu.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:	rbghyu.exe
File opened (read-only)	\??\k:	rbghyu.exe
File opened (read-only)	\??\v:	rbghyu.exe
File opened (read-only)	\??\y:	rbghyu.exe
File opened (read-only)	\??\a:	rbghyu.exe
File opened (read-only)	\??\b:	rbghyu.exe
File opened (read-only)	\??\g:	rbghyu.exe
File opened (read-only)	\??\h:	rbghyu.exe
File opened (read-only)	\??\o:	rbghyu.exe
File opened (read-only)	\??\r:	rbghyu.exe
File opened (read-only)	\??\s:	rbghyu.exe
File opened (read-only)	\??\t:	rbghyu.exe
File opened (read-only)	\??\w:	rbghyu.exe
File opened (read-only)	\??\x:	rbghyu.exe
File opened (read-only)	\??\i:	rbghyu.exe
File opened (read-only)	\??\l:	rbghyu.exe
File opened (read-only)	\??\m:	rbghyu.exe
File opened (read-only)	\??\p:	rbghyu.exe
File opened (read-only)	\??\j:	rbghyu.exe
File opened (read-only)	\??\n:	rbghyu.exe
File opened (read-only)	\??\q:	rbghyu.exe
File opened (read-only)	\??\u:	rbghyu.exe
File opened (read-only)	\??\z:	rbghyu.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	rbghyu.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\trntx	kenfd.exe
File created	\??\c:\Program Files\trntx\rbghyu.dll	kenfd.exe
File created	\??\c:\Program Files\trntx\rbghyu.exe	kenfd.exe
File opened for modification	\??\c:\Program Files\trntx\rbghyu.exe	kenfd.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	rbghyu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a65060ed695f08888f938ffec8d83da0N.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	kenfd.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
1948	cmd.exe
2168	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	rbghyu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rbghyu.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2168	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2896	rbghyu.exe
2896	rbghyu.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	rbghyu.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2488	a65060ed695f08888f938ffec8d83da0N.exe
592	kenfd.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 1948	2488	a65060ed695f08888f938ffec8d83da0N.exe	28
PID 2488 wrote to memory of 1948	2488	a65060ed695f08888f938ffec8d83da0N.exe	28
PID 2488 wrote to memory of 1948	2488	a65060ed695f08888f938ffec8d83da0N.exe	28
PID 2488 wrote to memory of 1948	2488	a65060ed695f08888f938ffec8d83da0N.exe	28
PID 1948 wrote to memory of 2168	1948	cmd.exe	30
PID 1948 wrote to memory of 2168	1948	cmd.exe	30
PID 1948 wrote to memory of 2168	1948	cmd.exe	30
PID 1948 wrote to memory of 2168	1948	cmd.exe	30
PID 1948 wrote to memory of 592	1948	cmd.exe	31
PID 1948 wrote to memory of 592	1948	cmd.exe	31
PID 1948 wrote to memory of 592	1948	cmd.exe	31
PID 1948 wrote to memory of 592	1948	cmd.exe	31
PID 592 wrote to memory of 2896	592	kenfd.exe	32
PID 592 wrote to memory of 2896	592	kenfd.exe	32
PID 592 wrote to memory of 2896	592	kenfd.exe	32
PID 592 wrote to memory of 2896	592	kenfd.exe	32

C:\Users\Admin\AppData\Local\Temp\a65060ed695f08888f938ffec8d83da0N.exe
"C:\Users\Admin\AppData\Local\Temp\a65060ed695f08888f938ffec8d83da0N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\kenfd.exe "C:\Users\Admin\AppData\Local\Temp\a65060ed695f08888f938ffec8d83da0N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1948
- - 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:2168
- - C:\Users\Admin\AppData\Local\Temp\kenfd.exe
    C:\Users\Admin\AppData\Local\Temp\\kenfd.exe "C:\Users\Admin\AppData\Local\Temp\a65060ed695f08888f938ffec8d83da0N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:592
  - - \??\c:\Program Files\trntx\rbghyu.exe
      "c:\Program Files\trntx\rbghyu.exe" "c:\Program Files\trntx\rbghyu.dll",WriteErrorLog C:\Users\Admin\AppData\Local\Temp\kenfd.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:2896

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

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

Replay Monitor

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Downloads

\??\c:\Program Files\trntx\rbghyu.dll

Filesize
181KB

MD5
a3dfdf1a2ae963ae0eb5cd684a7e1703

SHA1
baab4b08304131d6f9b4b01bd30687d6a2ea0953

SHA256
a9a4877afb0f3f4044871c9043a438daa37c0f3d808d9000d448e469a5778fe9

SHA512
23aab65beac75fdd2aad26d270b48fc9ea8bbc3eb97c2de23cbb627c98d2474267c5f38ee7e381d74da26896312e0a0582f42f18802b59f5e058eb20ebd00c4d

Download Submit
\Program Files\trntx\rbghyu.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\kenfd.exe

Filesize
487KB

MD5
8a43da5ec572416066f34935d69cffd3

SHA1
0220b816da87ac0797ff7db6191cabf910040b84

SHA256
851892fa27059aa54028f1098854cd9729912ecec8a1b3e13054cc40f5b83d00

SHA512
4f01b2aee321e636363f599401f0c445d7d979d3d7eb69631157423f3e6267082ceb474e40c809fcb0103aee26dc5acbd1e4d561f1e96fb0f71ead07a3742c9c

Download Submit
memory/2896-20-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download
memory/2896-19-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-18-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-13-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-21-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-23-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-25-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-27-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download
memory/2896-29-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-32-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2896-36-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads