modiloader | 54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b

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
19-01-2025 00:41

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General

Target

54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
Size

300KB
MD5

6f073d14508aa79d76397cffce235651
SHA1

233420074164775690b3193a3684a890c3ededf9
SHA256

54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b
SHA512

d50a90ca45573953c295e94d609b76e1b1ef3c824c858348e1e9bf2519666f40489921f7e0b518afb40e937aae37fe9e564fbf3c3580147394338732eede8cbb
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38Gs:UsxD5cwohO+O1sVG0/pZ6iPC8q

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/4952-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4952-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4952-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4952-59-0x0000000000400000-0x0000000000414000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe

Executes dropped EXE 3 IoCs

pid	Process
1684	csrsll.exe
4400	csrsll.exe
4952	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-1-5-21-493223053-2004649691-1575712786-1000\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 2244 set thread context of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 1684 set thread context of 4400	1684	csrsll.exe	101
PID 1684 set thread context of 4952	1684	csrsll.exe	102

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2876-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2876-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2876-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2876-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4952-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4952-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4952-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4952-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4952-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2876-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4400-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4952-59-0x0000000000400000-0x0000000000414000-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	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	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.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	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe
Token: SeDebugPrivilege	4400	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
1684	csrsll.exe
4400	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2244 wrote to memory of 2876	2244	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	83
PID 2876 wrote to memory of 3748	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	90
PID 2876 wrote to memory of 3748	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	90
PID 2876 wrote to memory of 3748	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	90
PID 3748 wrote to memory of 2676	3748	cmd.exe	94
PID 3748 wrote to memory of 2676	3748	cmd.exe	94
PID 3748 wrote to memory of 2676	3748	cmd.exe	94
PID 2876 wrote to memory of 1684	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	95
PID 2876 wrote to memory of 1684	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	95
PID 2876 wrote to memory of 1684	2876	54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe	95
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4400	1684	csrsll.exe	101
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102
PID 1684 wrote to memory of 4952	1684	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
"C:\Users\Admin\AppData\Local\Temp\54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe
  "C:\Users\Admin\AppData\Local\Temp\54b4b6ff065acfe556314a4cde93e8ece949e0afb807739ce68d0cef6b75086b.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2876
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BRSPY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3748
  - - 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:2676
- - 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:1684
  - - 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:4400
  - - 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:4952

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\BRSPY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
a6b945577f51ea6e60b16d491c7291ec

SHA1
88af81d4db2e1d4ab93c144e4cd804b4d2dbc005

SHA256
8ffadad42699799051482a1f27005ebc0046f146b4dd8dcb849cd5e4cb906fc8

SHA512
a88670947927cf232b8055d6fc927c6b998687859b03f552a4b6bfe581625361ff17b5650e28c2bf50d3d3479f9b44192c3075808da78aa2d1183ae273bae252

Download Submit
memory/1684-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1684-55-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1684-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2244-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2244-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/2244-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2244-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2876-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2876-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2876-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2876-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2876-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4400-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4952-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4952-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads