modiloader | f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 00:08

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General

Target

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
Size

90KB
MD5

83ffbd9131dbfd385732b686a669e210
SHA1

57ff05270ede35b3bbfe5109c4ad5860f4f4b215
SHA256

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31
SHA512

f0d364e75d0893f6e6a0dd43e6fe3d4696cd67c061fdbd19f4ccc5d3289aeb6ce862707828f0ac680e8ada82b08ac111fc076da13cc268058263648f8a80da6c
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDq: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

Processes:

resource	yara_rule
behavioral2/memory/1272-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1272-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1272-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1272-63-0x0000000000400000-0x0000000000414000-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

Processes:

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
4940	csrsll.exe
4968	csrsll.exe
1272	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.execsrsll.exe

description	pid	Process	procid_target
PID 2896 set thread context of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 4940 set thread context of 4968	4940	csrsll.exe	101
PID 4940 set thread context of 1272	4940	csrsll.exe	102

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2896-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2896-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1744-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2896-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000e000000023af5-29.dat	upx
behavioral2/memory/4940-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4940-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4940-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1272-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1272-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1272-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1272-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4940-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1272-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1744-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4968-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1272-63-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.exef17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exef17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.execmd.exereg.execsrsll.execsrsll.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe
Token: SeDebugPrivilege	4968	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exef17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.execsrsll.execsrsll.exe

pid	Process
2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
4940	csrsll.exe
4968	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exef17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 2896 wrote to memory of 1744	2896	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	93
PID 1744 wrote to memory of 1188	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	94
PID 1744 wrote to memory of 1188	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	94
PID 1744 wrote to memory of 1188	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	94
PID 1188 wrote to memory of 3076	1188	cmd.exe	97
PID 1188 wrote to memory of 3076	1188	cmd.exe	97
PID 1188 wrote to memory of 3076	1188	cmd.exe	97
PID 1744 wrote to memory of 4940	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	98
PID 1744 wrote to memory of 4940	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	98
PID 1744 wrote to memory of 4940	1744	f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe	98
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 4968	4940	csrsll.exe	101
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102
PID 4940 wrote to memory of 1272	4940	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
"C:\Users\Admin\AppData\Local\Temp\f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Users\Admin\AppData\Local\Temp\f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe
  "C:\Users\Admin\AppData\Local\Temp\f17224a5a0cb11e56767da7889b36f10adc38344a386e05395bcca78f24d8f31N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KXYBL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1188
  - - 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:3076
- - 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:4940
  - - 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:4968
  - - 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:1272

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\KXYBL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
ecc4b5a884ab7fddd7616b18e45dea82

SHA1
6b4f2b10bb81436f6d6c5716d022da1ee3030478

SHA256
56bbca31251875e78983f07c9aae3244ea9bf48acf75281bf90df9a32665890a

SHA512
83d05e1f7fffd213ec0aa4c7f8f0e88aea9fda1780f7af5e837a71f886ff6b8de57d41d54fb94021d8635b1067fa36c61750f6b3f0afa9cad30b7e95aa363a61

Download Submit
memory/1272-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1272-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1272-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1272-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1272-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1272-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1744-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1744-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2896-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2896-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2896-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2896-4-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/2896-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2896-3-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/4940-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4940-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4940-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4940-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4968-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download