modiloader | bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e

Analysis

max time kernel
118s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 22:55

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General

Target

bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
Size

90KB
MD5

0b342bf6b0f8c9796471692c1c6f22a6
SHA1

f453c53ba22ca43e284fde9410976c181ff0fb0d
SHA256

bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e
SHA512

4b613ef25af2029e54a6666494c993c0698dffb14dc6cf647dcec897de5c45da8c1343b806d6c4284017e8e23fc9597c5890631a84d93e42e376c3e739721e69
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDN:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3b

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/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4824-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe

Executes dropped EXE 3 IoCs

pid	Process
4768	csrsll.exe
3532	csrsll.exe
4824	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-1-5-21-3756129449-3121373848-4276368241-1000\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 2844 set thread context of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 4768 set thread context of 3532	4768	csrsll.exe	93
PID 4768 set thread context of 4824	4768	csrsll.exe	94

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2844-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2844-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3912-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3912-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3912-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2844-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0009000000023c5d-29.dat	upx
behavioral2/memory/3912-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4768-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4768-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3532-50-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4824-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4824-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4768-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3912-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3532-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4824-62-0x0000000000400000-0x0000000000414000-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	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	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe
Token: SeDebugPrivilege	3532	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
4768	csrsll.exe
3532	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 2844 wrote to memory of 3912	2844	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	82
PID 3912 wrote to memory of 4244	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	83
PID 3912 wrote to memory of 4244	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	83
PID 3912 wrote to memory of 4244	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	83
PID 4244 wrote to memory of 408	4244	cmd.exe	86
PID 4244 wrote to memory of 408	4244	cmd.exe	86
PID 4244 wrote to memory of 408	4244	cmd.exe	86
PID 3912 wrote to memory of 4768	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	87
PID 3912 wrote to memory of 4768	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	87
PID 3912 wrote to memory of 4768	3912	bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe	87
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 3532	4768	csrsll.exe	93
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94
PID 4768 wrote to memory of 4824	4768	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
"C:\Users\Admin\AppData\Local\Temp\bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe
  "C:\Users\Admin\AppData\Local\Temp\bb46afcc7667b032fd2a69bc5c3cc527d02142f865da3bd9ca5ad5bdfef4e90e.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3912
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BQROX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4244
  - - 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:408
- - 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:4768
  - - 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:3532
  - - 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:4824

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\BQROX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
1b3576678a4b8de5222ba6193c2985ef

SHA1
e5323b1f98385b25d344b57dc7889f67d00d96fa

SHA256
929977ec79a7ede5468ec7401e517516dad1ad972311924ac25b6d605118609e

SHA512
e5dab83bdb40db063b66201c7d478f1a531244b255803409558d22b0666a4e4beb8ee7dde1897aac4b58c73a43c85f822cdd594b6e307f4d27dd55194a4b03a7

Download Submit
memory/2844-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2844-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2844-5-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/2844-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/2844-3-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/2844-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3532-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3532-50-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3912-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4768-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4768-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4768-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4824-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4824-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads