modiloader | 2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2024, 21:00

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General

Target

2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
Size

300KB
MD5

80c391a0e872bd8aa4f343189ecae66b
SHA1

cae6ca7e7ba76738bde5884bcf583c151b172c6f
SHA256

2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a
SHA512

c0bc4713c396ccdae560cc420c1a5215e1697a1aaf139ef628de6be210a5f5e4d07f17ef01e4d0f25f41fb8a3292646562c70fffb086a7134242cdbe367d350d
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38Gg:UsxD5cwohO+O1sVG0/pZ6iPC8O

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/1304-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1304-58-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe

Executes dropped EXE 3 IoCs

pid	Process
2660	csrsll.exe
2424	csrsll.exe
1304	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-1-5-21-1045960512-3948844814-3059691613-1000\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 5084 set thread context of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 2660 set thread context of 2424	2660	csrsll.exe	93
PID 2660 set thread context of 1304	2660	csrsll.exe	94

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4220-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4220-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4220-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4220-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1304-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1304-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4220-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2424-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1304-58-0x0000000000400000-0x0000000000414000-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	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	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.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	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe
Token: SeDebugPrivilege	2424	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
2660	csrsll.exe
2424	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 5084 wrote to memory of 4220	5084	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	84
PID 4220 wrote to memory of 3928	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	85
PID 4220 wrote to memory of 3928	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	85
PID 4220 wrote to memory of 3928	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	85
PID 3928 wrote to memory of 3888	3928	cmd.exe	89
PID 3928 wrote to memory of 3888	3928	cmd.exe	89
PID 3928 wrote to memory of 3888	3928	cmd.exe	89
PID 4220 wrote to memory of 2660	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	90
PID 4220 wrote to memory of 2660	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	90
PID 4220 wrote to memory of 2660	4220	2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe	90
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 2424	2660	csrsll.exe	93
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94
PID 2660 wrote to memory of 1304	2660	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
"C:\Users\Admin\AppData\Local\Temp\2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Users\Admin\AppData\Local\Temp\2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe
  "C:\Users\Admin\AppData\Local\Temp\2f8709d5b1dc86a6a09aecc1f7ac5d2c280d6b4e6df0a74cdb8243decc08350a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4220
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CFRSN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3928
  - - 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:3888
- - 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:2660
  - - 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:2424
  - - 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:1304

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\CFRSN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
d8efe7d13d91a6e53bf5b3e953fd768c

SHA1
3801c7148f42392f085f0ead1511531524b8e801

SHA256
b3fa0dbaee9871d7754f41b52dfc6ab70b9a422f3c133ed94d673bf42a6bd87b

SHA512
ddd50a9cc73f09ab64e7c44b751aea9860df1587b99e1797ad0ad8949ce25caa443fb5ba19787460f207728ebfc517044bb2229bc2277324bd89abeb3eddfc4b

Download Submit
memory/1304-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1304-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2424-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2660-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2660-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2660-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4220-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4220-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4220-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4220-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4220-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5084-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/5084-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/5084-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/5084-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads