modiloader | 003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6

Analysis

max time kernel
149s
max time network
150s
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 11:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
Size

326KB
MD5

d08fa43660dfc4e16ccfa026531cbfa0
SHA1

5c0e7ac0231970d7901917e7057f254a8bd7fc8e
SHA256

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6
SHA512

e496eb2664de96255d874bdea9b74f4753d90b75c782a77f67d3594066df3cce8d5954c92f55b97b8d0cdbd9eca7e508f1892977013d0aaa0be60588366ce918
SSDEEP

3072:h0e2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:h0sxD5cwohO+O1sVG0/pZ6iPC8

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/2256-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2256-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2256-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2256-60-0x0000000000400000-0x0000000000414000-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:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
1944	csrsll.exe
1912	csrsll.exe
2256	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:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execsrsll.exe

description	pid	Process	procid_target
PID 2680 set thread context of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 1944 set thread context of 1912	1944	csrsll.exe	100
PID 1944 set thread context of 2256	1944	csrsll.exe	101

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2680-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2680-4-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2972-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2972-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2680-10-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2972-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2972-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cc2-28.dat	upx
behavioral2/memory/1944-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2972-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2256-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2256-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2256-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2256-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2256-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1944-56-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2972-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1912-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2256-60-0x0000000000400000-0x0000000000414000-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.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.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	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.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	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe
Token: SeDebugPrivilege	1912	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execsrsll.execsrsll.exe

pid	Process
2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
1944	csrsll.exe
1912	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2680 wrote to memory of 2972	2680	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	92
PID 2972 wrote to memory of 940	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 2972 wrote to memory of 940	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 2972 wrote to memory of 940	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	95
PID 940 wrote to memory of 4308	940	cmd.exe	98
PID 940 wrote to memory of 4308	940	cmd.exe	98
PID 940 wrote to memory of 4308	940	cmd.exe	98
PID 2972 wrote to memory of 1944	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 2972 wrote to memory of 1944	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 2972 wrote to memory of 1944	2972	003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe	99
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 1912	1944	csrsll.exe	100
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101
PID 1944 wrote to memory of 2256	1944	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
"C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe
  "C:\Users\Admin\AppData\Local\Temp\003b8f678b287bb6bc1fda520d3559d542c133e7f2f1287010da3e604ea924d6N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BXWAN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:940
  - - 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:4308
- - 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:1944
  - - 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:1912
  - - 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:2256

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

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
cc4e1ff79cc7a309fbb4ab2c7a0ca94d

SHA1
767bbee3ca7d90ff74416786afcf559d6dfe2d0a

SHA256
4f2426972be85eb22171357a1a87a49255b31f88df34ec33a6b0e34ed1261f1d

SHA512
dad92164908dd1c50bd9528897d61606e43d36066862824bfe1d173de287a92a57151ac29de5a982baaf98211c9c34601a99287ae35ae522b3090095177c798d

Download Submit
memory/1912-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1944-56-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1944-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1944-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2256-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2256-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2256-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2256-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2256-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2256-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2680-5-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/2680-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/2680-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2680-10-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2680-4-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2680-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2972-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2972-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download