modiloader | 8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60

Analysis

max time kernel
148s
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
07/09/2024, 23:53

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General

Target

8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
Size

308KB
MD5

b46bd284e1233d6fa46ca11fd1814f0d
SHA1

0d4ffe8aaf941085257acdab1a9beca8f5e87957
SHA256

8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60
SHA512

4292c3f59df7334bbf85a20240fbd81535740a87372f5f60315a72e180900ec5651cf0086d720c6fe81381a90762091fea1a6412b282b6100d102a2beeed6fff
SSDEEP

3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F

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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1392-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1392-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1392-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1392-58-0x0000000000400000-0x0000000000414000-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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe

Executes dropped EXE 3 IoCs

pid	Process
4848	csrsll.exe
2168	csrsll.exe
1392	csrsll.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4144-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4144-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4144-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4144-46-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1392-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1392-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1392-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1392-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1392-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4144-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2168-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1392-58-0x0000000000400000-0x0000000000414000-memory.dmp	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-1-5-21-2412658365-3084825385-3340777666-1000\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 5036 set thread context of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 4848 set thread context of 2168	4848	csrsll.exe	94
PID 4848 set thread context of 1392	4848	csrsll.exe	95

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	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	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe
Token: SeDebugPrivilege	2168	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
4848	csrsll.exe
2168	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 5036 wrote to memory of 4144	5036	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	86
PID 4144 wrote to memory of 1284	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	87
PID 4144 wrote to memory of 1284	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	87
PID 4144 wrote to memory of 1284	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	87
PID 1284 wrote to memory of 1236	1284	cmd.exe	92
PID 1284 wrote to memory of 1236	1284	cmd.exe	92
PID 1284 wrote to memory of 1236	1284	cmd.exe	92
PID 4144 wrote to memory of 4848	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	93
PID 4144 wrote to memory of 4848	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	93
PID 4144 wrote to memory of 4848	4144	8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe	93
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 2168	4848	csrsll.exe	94
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95
PID 4848 wrote to memory of 1392	4848	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
"C:\Users\Admin\AppData\Local\Temp\8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Users\Admin\AppData\Local\Temp\8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe
  "C:\Users\Admin\AppData\Local\Temp\8a5ff8139c970e3f8abf5e05821c1f90cfb112e5dba8f9a124a773902192cd60.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KFDUS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1284
  - - 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:1236
- - 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:4848
  - - 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:2168
  - - 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:1392

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
308KB

MD5
a9790642b30ee8bd0c9bf974653709c6

SHA1
77d8e8d8851fbc8ce671ba03527452849f2a0eb9

SHA256
d13051302f477d95a6f500f46e7044317f4b6bdc4e3b19e651a8018c05dd9c12

SHA512
71311fd650147a6b738ad9958e6d1230fefd53df23a983a4380f72a810d5583d1afe81909ca72969613a2e5316bb0f241a08494b54cb6fbea729d495145a91be

Download Submit
memory/1392-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1392-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-46-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4144-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4848-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4848-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4848-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4848-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5036-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5036-4-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download
memory/5036-3-0x0000000002A20000-0x0000000002A21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads