latentbot | 15e253cfeaecd2ef2536032ee0d338b76537d1e93d25c6369fbfa2a527b3fa43

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/09/2024, 03:09

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General

Target
eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Size 2.0MB
Sample240921-dnwl8ascrg
SHA256 15e253cfeaecd2ef2536032ee0d338b76537d1e93d25c6369fbfa2a527b3fa43
MD5 eef68640f3b78e042fba7f45a518e9c3
SHA1 f2170f4abbcf3d09b53d9a6ed146d8595fa4e96c
SHA512 2f6acf3d2147761eea52168b8418296969acd228c4f26be4cfcb64d5a3dd5a61be71e371a05eb047000c99ef766e83b12b500ea2d78c554f94bb76ac13489c93
SSDEEP 12288:o7qYxucwN74XguniSTsrHGyKWUxUHeC7/wazIQNcF8r/X0SCu77AX:oSc9XguniGiNhsCIQu8rcSC8kX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

latentbot discovery persistence trojan upx

Malware Config

Extracted

Family

latentbot

ewertontoom.zapto.org

Signatures

LatentBot
Modular trojan written in Delphi which has been in-the-wild since 2013.
trojan latentbot

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 5 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4412	fservice.exe
4508	services.exe

Loads dropped DLL 5 IoCs

pid	Process
4508	services.exe
4508	services.exe
4508	services.exe
4412	fservice.exe
716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/716-0-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/files/0x00090000000233d9-6.dat	upx
behavioral2/memory/4412-33-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/716-35-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/4508-37-0x0000000000400000-0x00000000005FE000-memory.dmp	upx

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fservice.exe	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File created	C:\Windows\SysWOW64\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	fservice.exe
File opened for modification	C:\Windows\system\sservice.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	services.exe
File created	C:\Windows\system\sservice.exe	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
File opened for modification	C:\Windows\system\sservice.exe	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
File created	C:\Windows\services.exe	fservice.exe
File opened for modification	C:\Windows\services.exe	fservice.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NET.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fservice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	services.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe
4508	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4508	services.exe
4508	services.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 716 wrote to memory of 4412	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	82
PID 716 wrote to memory of 4412	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	82
PID 716 wrote to memory of 4412	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	82
PID 4412 wrote to memory of 4508	4412	fservice.exe	83
PID 4412 wrote to memory of 4508	4412	fservice.exe	83
PID 4412 wrote to memory of 4508	4412	fservice.exe	83
PID 4508 wrote to memory of 752	4508	services.exe	84
PID 4508 wrote to memory of 752	4508	services.exe	84
PID 4508 wrote to memory of 752	4508	services.exe	84
PID 4508 wrote to memory of 1560	4508	services.exe	85
PID 4508 wrote to memory of 1560	4508	services.exe	85
PID 4508 wrote to memory of 1560	4508	services.exe	85
PID 716 wrote to memory of 4544	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	88
PID 716 wrote to memory of 4544	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	88
PID 716 wrote to memory of 4544	716	eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe	88
PID 1560 wrote to memory of 3276	1560	NET.exe	89
PID 1560 wrote to memory of 3276	1560	NET.exe	89
PID 1560 wrote to memory of 3276	1560	NET.exe	89
PID 752 wrote to memory of 3488	752	NET.exe	91
PID 752 wrote to memory of 3488	752	NET.exe	91
PID 752 wrote to memory of 3488	752	NET.exe	91

C:\Users\Admin\AppData\Local\Temp\eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Boot or Logon Autostart Execution: Active Setup
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4412
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Boot or Logon Autostart Execution: Active Setup
    - Executes dropped EXE
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4508
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:752
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3488
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1560
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3276
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\eef68640f3b78e042fba7f45a518e9c3_JaffaCakes118.exe.bat
Size 133B
SHA256 9ec5b2a5579e393b9baebee394ed60c7b5b43964620dce534615f09fbb73d99f
MD5 d942004c052dce4e308e68dd3d3cc887
SHA1 8f34aa342808dcc1408f646d4784b73380a5c6db
SHA512 9fdc7fdc808a3b4d39d44f941dc096f4f6094891e1daf7237a00b921bb96cf518f97157698de03d8821e2778168f99cb3c0b89def3954a553a47ae592efeadb9
MD5 SHA1 SHA512

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fservice.exe

Path C:\Windows\SysWOW64\fservice.exe
Size 2.0MB
SHA256 15e253cfeaecd2ef2536032ee0d338b76537d1e93d25c6369fbfa2a527b3fa43
MD5 eef68640f3b78e042fba7f45a518e9c3
SHA1 f2170f4abbcf3d09b53d9a6ed146d8595fa4e96c
SHA512 2f6acf3d2147761eea52168b8418296969acd228c4f26be4cfcb64d5a3dd5a61be71e371a05eb047000c99ef766e83b12b500ea2d78c554f94bb76ac13489c93
SSDEEP 12288:o7qYxucwN74XguniSTsrHGyKWUxUHeC7/wazIQNcF8r/X0SCu77AX:oSc9XguniGiNhsCIQu8rcSC8kX
MD5 SHA1 SHA512 SSDEEP

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reginv.dll

Path C:\Windows\SysWOW64\reginv.dll
Size 36KB
SHA256 2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77
MD5 d4a3f90e159ffbcbc4f9740de4b7f171
SHA1 0542f5d1e2c23dca8d90766b3a8537dc3880e5c9
SHA512 5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94
SSDEEP 384:cFqS7spWkPT5NGqu1mlWVtCMv6RyZbWwANgNoUozW+51B:cFNWvT5JOCRsWwA+iUo
MD5 SHA1 SHA512 SSDEEP

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winkey.dll

Path C:\Windows\SysWOW64\winkey.dll
Size 24KB
SHA256 f1b2b0abe844e6ba812c7f8709a463a7f6c56fa6ac38d376a0739cc3469f795b
MD5 43e7d9b875c921ba6be38d45540fb9dd
SHA1 f22a73fc0d4aa3ea6c0b8f61d974b028f308acc4
SHA512 2e74e23c0875b69b82319391c392132f28f4eb45aa412805130382498ae48969a06a2b3a7528b626fa7d7ddb6b006f19f0ef8d73cf73cb9a0c0df44a21077622
SSDEEP 96:N29vgScOs9K2roji5OLC4PGCq2cfD78uWjJxl:N2NgHOyK2rojiyqPkx
MD5 SHA1 SHA512 SSDEEP

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memory/716-0-0x0000000000400000-0x00000000005FE000-memory.dmp

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memory/716-1-0x0000000000DA0000-0x0000000000DA1000-memory.dmp

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memory/716-35-0x0000000000400000-0x00000000005FE000-memory.dmp

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memory/4412-9-0x00000000007D0000-0x00000000007D1000-memory.dmp

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memory/4412-33-0x0000000000400000-0x00000000005FE000-memory.dmp

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memory/4508-18-0x0000000002570000-0x0000000002571000-memory.dmp

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memory/4508-37-0x0000000000400000-0x00000000005FE000-memory.dmp

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memory/4508-38-0x0000000002570000-0x0000000002571000-memory.dmp

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