modiloader | d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 22:59

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General

Target

d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
Size

90KB
MD5

3d7b5947c237970c25e6eba6ce28d489
SHA1

d20dd4df3f28ca133c4c1504269051fa8376f090
SHA256

d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f
SHA512

ac8a98f6f2fd62d6c3100ad64e1136be5a67699d3f4a82d1f801659e02f1202272088657e73478003029100db50f31796c782e078a8d8623581f6253b0815524
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDU:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3q

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/1876-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1876-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1876-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1876-59-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe

Executes dropped EXE 3 IoCs

pid	Process
2472	csrsll.exe
1044	csrsll.exe
1876	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 3752 set thread context of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 2472 set thread context of 1044	2472	csrsll.exe	91
PID 2472 set thread context of 1876	2472	csrsll.exe	92

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3752-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3752-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1984-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1984-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1984-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3752-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000c000000023b88-28.dat	upx
behavioral2/memory/1984-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2472-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2472-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1876-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1876-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1876-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1876-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1876-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2472-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1984-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1044-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1876-59-0x0000000000400000-0x0000000000414000-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	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe
Token: SeDebugPrivilege	1044	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
2472	csrsll.exe
1044	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 3752 wrote to memory of 1984	3752	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	84
PID 1984 wrote to memory of 2340	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	85
PID 1984 wrote to memory of 2340	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	85
PID 1984 wrote to memory of 2340	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	85
PID 2340 wrote to memory of 844	2340	cmd.exe	89
PID 2340 wrote to memory of 844	2340	cmd.exe	89
PID 2340 wrote to memory of 844	2340	cmd.exe	89
PID 1984 wrote to memory of 2472	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	90
PID 1984 wrote to memory of 2472	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	90
PID 1984 wrote to memory of 2472	1984	d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe	90
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1044	2472	csrsll.exe	91
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92
PID 2472 wrote to memory of 1876	2472	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
"C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe
  "C:\Users\Admin\AppData\Local\Temp\d527f50d3b5e874b76c0764b0904b8b9cee43d3aba1113435d40184f799bd05f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\GFSIW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - 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:844
- - 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:2472
  - - 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:1044
  - - 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:1876

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\GFSIW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
74d874bcc26678354198eb8684163d44

SHA1
430cf799c454bf0fdd76274279ec00d581c19e9f

SHA256
e0333ee4b7adf9b72d6b7bde0bb51cf7e15c69e4cf990dfe38d23cf384aff8bf

SHA512
e0203208b9ddc23893d3e5cdcf77c7d6b4988ff3173f8838e7097c2c41951ea245a33902298a984c467dc5a17b67a2cf6deca37825bb0609ccc50d623a888860

Download Submit
memory/1044-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1876-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1876-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1876-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1876-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1876-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1876-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1984-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1984-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1984-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1984-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1984-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2472-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2472-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2472-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3752-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3752-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3752-4-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3752-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/3752-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3752-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads