modiloader | 8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76

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
04/12/2024, 00:57

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General

Target

8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe
Size

300KB
MD5

fcd439495e41589b112ec0fdc23dd260
SHA1

5c870d4cc86f6a773769ec4fa663bfe599df8665
SHA256

8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76
SHA512

f1548bb5b549d9b49fae7d56be77466e5a135cdb083ec26af7ed1de0a02b8de8c21c8a3b934994bc06af76b2b59ea10faf5d8b0ea36303d4c3a7bffaf402cf0c
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38GG:UsxD5cwohO+O1sVG0/pZ6iPC8I

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/4268-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4268-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4268-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4268-58-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe

Executes dropped EXE 3 IoCs

pid	Process
4992	csrsll.exe
4724	csrsll.exe
4268	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-1-5-21-3350944739-639801879-157714471-1000\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 1148 set thread context of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 4992 set thread context of 4724	4992	csrsll.exe	97
PID 4992 set thread context of 4268	4992	csrsll.exe	98

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2056-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2056-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2056-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2056-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2056-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4268-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4268-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4268-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2056-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4268-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4268-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4724-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4268-58-0x0000000000400000-0x0000000000414000-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	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe
Token: SeDebugPrivilege	4724	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe
2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe
4992	csrsll.exe
4724	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 1148 wrote to memory of 2056	1148	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	83
PID 2056 wrote to memory of 228	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	84
PID 2056 wrote to memory of 228	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	84
PID 2056 wrote to memory of 228	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	84
PID 228 wrote to memory of 392	228	cmd.exe	88
PID 228 wrote to memory of 392	228	cmd.exe	88
PID 228 wrote to memory of 392	228	cmd.exe	88
PID 2056 wrote to memory of 4992	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	89
PID 2056 wrote to memory of 4992	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	89
PID 2056 wrote to memory of 4992	2056	8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe	89
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4724	4992	csrsll.exe	97
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98
PID 4992 wrote to memory of 4268	4992	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe
"C:\Users\Admin\AppData\Local\Temp\8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Users\Admin\AppData\Local\Temp\8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe
  "C:\Users\Admin\AppData\Local\Temp\8d7f44884ac78b65e8929b71d7b7b0003fa3dd248bd03877b64432c7023b2d76N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2056
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FVWTC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:228
  - - 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:392
- - 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:4992
  - - 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:4724
  - - 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:4268

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\FVWTC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
2b423b6cda8c903b40b2e5832ca369ac

SHA1
9db2862bc09bb4943d61ef3aa05ae7e3774e2ad1

SHA256
3a16acd397c8ad6fe162c112a733a49fdf973ef92421176df7e98d2e40009275

SHA512
60ccc089f803a02f3e133db9b82cc8b524bb42a1b08b1d4fda19b98414ae8b9ccaa85131e1b333f892e9bc522cadfd585aca69cedbee6ec3b5460b3370edb540

Download Submit
memory/1148-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/1148-4-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/1148-5-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/1148-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2056-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2056-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2056-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2056-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2056-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2056-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4268-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4268-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4268-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4268-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4268-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4268-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4724-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4992-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4992-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4992-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads