modiloader | f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232a

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2024 09:21

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General

Target

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
Size

326KB
MD5

ceaafdb7a6b5d6ba4fc8c510e35ff9f0
SHA1

ad0d0fc5059f852d8ba86984560834ee36a560d9
SHA256

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232a
SHA512

d30dfd63116d4a23af889d11cdcacdca25b35870fcff4f10284f43a0f2c4a3c7f41467f1fc51a65637dde06d5bc6f6fea808149ba1b1ba17e2f29c7769657597
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+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/1776-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1776-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1776-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1776-61-0x0000000000400000-0x0000000000414000-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:

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
3380	csrsll.exe
2680	csrsll.exe
1776	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.execsrsll.exe

description	pid	Process	procid_target
PID 4480 set thread context of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 3380 set thread context of 2680	3380	csrsll.exe	103
PID 3380 set thread context of 1776	3380	csrsll.exe	104

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4480-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4480-5-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4080-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4080-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4080-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4480-12-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/files/0x000a000000023cb9-28.dat	upx
behavioral2/memory/3380-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4080-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3380-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3380-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1776-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1776-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3380-57-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1776-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4080-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1776-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1776-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2680-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1776-61-0x0000000000400000-0x0000000000414000-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.execsrsll.execsrsll.exef78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exef78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.execmd.exereg.exe

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	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.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

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe
Token: SeDebugPrivilege	2680	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exef78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.execsrsll.execsrsll.exe

pid	Process
4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
3380	csrsll.exe
2680	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exef78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4480 wrote to memory of 4080	4480	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	92
PID 4080 wrote to memory of 1636	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	97
PID 4080 wrote to memory of 1636	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	97
PID 4080 wrote to memory of 1636	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	97
PID 1636 wrote to memory of 2452	1636	cmd.exe	101
PID 1636 wrote to memory of 2452	1636	cmd.exe	101
PID 1636 wrote to memory of 2452	1636	cmd.exe	101
PID 4080 wrote to memory of 3380	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	102
PID 4080 wrote to memory of 3380	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	102
PID 4080 wrote to memory of 3380	4080	f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe	102
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 2680	3380	csrsll.exe	103
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104
PID 3380 wrote to memory of 1776	3380	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
"C:\Users\Admin\AppData\Local\Temp\f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Users\Admin\AppData\Local\Temp\f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe
  "C:\Users\Admin\AppData\Local\Temp\f78a45c9c6e021f1204639c0a382a49cb81e4ba8db71f89c2f6533927015232aN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4080
- - 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:1636
  - - 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:2452
- - 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:3380
  - - 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:2680
  - - 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:1776

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
3d1c7f95f53d204cac20e61dc86299c4

SHA1
71198d256718f57d29ccd2f739b3eec66f96c931

SHA256
07430465cb6a7a5bb7412b35a7cf2252932a2f09f191dfa723d670cdcba4f201

SHA512
38f68778b59cdea997555c53d623e4ede336512a8ad358af1bde55ee83fda2bb8b6d40a145d9a4c791d15216a165f637b2fa6ff82787a0ab52cad96638fccbd6

Download Submit
memory/1776-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1776-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1776-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1776-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1776-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1776-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2680-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3380-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3380-57-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3380-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3380-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4080-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4080-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4080-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4080-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4080-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4480-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4480-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4480-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4480-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4480-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4480-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download