modiloader | b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959

Analysis

max time kernel
118s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 15:14

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General

Target

b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
Size

90KB
MD5

6d32f261bad60e45ef3a70fe5bb12930
SHA1

95e24b0721bc62296ec9ead677f060770051111e
SHA256

b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959
SHA512

eca2fefc661f27988c90d14e13e4de84121d4567b62cdef2ceaacbb9b7c690cf63a7c047986fcda816b115f23622b1c2425e8f37b4f4f3359502d2227aa46c20
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/3824-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-62-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe

Executes dropped EXE 3 IoCs

pid	Process
2012	csrsll.exe
1140	csrsll.exe
3824	csrsll.exe

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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 976 set thread context of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 2012 set thread context of 1140	2012	csrsll.exe	100
PID 2012 set thread context of 3824	2012	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/976-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/976-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4648-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4648-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4648-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/976-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b6b-29.dat	upx
behavioral2/memory/4648-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2012-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2012-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3824-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3824-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3824-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3824-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3824-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2012-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4648-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1140-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3824-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe
Token: SeDebugPrivilege	1140	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
2012	csrsll.exe
1140	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 976 wrote to memory of 4648	976	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	92
PID 4648 wrote to memory of 2740	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	95
PID 4648 wrote to memory of 2740	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	95
PID 4648 wrote to memory of 2740	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	95
PID 2740 wrote to memory of 3964	2740	cmd.exe	98
PID 2740 wrote to memory of 3964	2740	cmd.exe	98
PID 2740 wrote to memory of 3964	2740	cmd.exe	98
PID 4648 wrote to memory of 2012	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	99
PID 4648 wrote to memory of 2012	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	99
PID 4648 wrote to memory of 2012	4648	b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe	99
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 1140	2012	csrsll.exe	100
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101
PID 2012 wrote to memory of 3824	2012	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
"C:\Users\Admin\AppData\Local\Temp\b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:976
- C:\Users\Admin\AppData\Local\Temp\b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe
  "C:\Users\Admin\AppData\Local\Temp\b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4648
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KYHHS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3964
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2012
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1140
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:3824

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\KYHHS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
6d32f261bad60e45ef3a70fe5bb12930

SHA1
95e24b0721bc62296ec9ead677f060770051111e

SHA256
b6ecef3349d6bacadb508002dcd7928bfe5ac6475f34ac19e035e99d6c1b6959

SHA512
eca2fefc661f27988c90d14e13e4de84121d4567b62cdef2ceaacbb9b7c690cf63a7c047986fcda816b115f23622b1c2425e8f37b4f4f3359502d2227aa46c20

Download Submit
memory/976-3-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/976-4-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/976-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/976-6-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/976-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/976-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2012-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2012-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2012-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3824-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3824-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4648-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4648-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4648-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4648-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4648-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4648-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads