modiloader | 7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993

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
04-12-2024 00:06

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General

Target

7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
Size

90KB
MD5

4e0812882e1979a0a91e0f5b08149856
SHA1

735b0599c89836e23d69c0c9ca80c3c549827eeb
SHA256

7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993
SHA512

b7a8d72ed01c1ecebf1cf496ea907ead758b1f6f14f1a8dc8c3b6fd33da09ec74b50caad83652993342a8103d592f6783fc499cfbc0e9ec68951ab411f99c1d0
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDl:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3X

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/2792-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2792-62-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe

Executes dropped EXE 3 IoCs

pid	Process
4816	csrsll.exe
2284	csrsll.exe
2792	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 4544 set thread context of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4816 set thread context of 2284	4816	csrsll.exe	101
PID 4816 set thread context of 2792	4816	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4544-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/440-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/440-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4544-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/440-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c78-29.dat	upx
behavioral2/memory/440-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4816-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4816-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2792-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2792-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4816-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/440-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2284-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2792-62-0x0000000000400000-0x0000000000414000-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	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe
Token: SeDebugPrivilege	2284	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
4816	csrsll.exe
2284	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 4544 wrote to memory of 440	4544	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	84
PID 440 wrote to memory of 2920	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	87
PID 440 wrote to memory of 2920	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	87
PID 440 wrote to memory of 2920	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	87
PID 2920 wrote to memory of 4220	2920	cmd.exe	91
PID 2920 wrote to memory of 4220	2920	cmd.exe	91
PID 2920 wrote to memory of 4220	2920	cmd.exe	91
PID 440 wrote to memory of 4816	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	92
PID 440 wrote to memory of 4816	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	92
PID 440 wrote to memory of 4816	440	7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe	92
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2284	4816	csrsll.exe	101
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102
PID 4816 wrote to memory of 2792	4816	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
"C:\Users\Admin\AppData\Local\Temp\7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Users\Admin\AppData\Local\Temp\7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe
  "C:\Users\Admin\AppData\Local\Temp\7ff4c81a3976abd048fa9955d23666ecb1f950e2e4f42a3e9a478126a0920993.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IWVHP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2920
  - - 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:4220
- - 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:4816
  - - 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:2284
  - - 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:2792

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\IWVHP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9ba159e32546357ff912990096940833

SHA1
778e2dbbc22818090c761232539132897e55574f

SHA256
44e3e99c6fd5471e6b6814aada469b1b3ed352aa8ae11ecc8bf8e862e9836407

SHA512
ea32db9f5155a150a917146b75bf264481caa2fefc28654ec429c13fe98ef87568a72d091b6fcfd0ef232f2b72e01abdb6d391243be15a22832c83c566147b26

Download Submit
memory/440-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/440-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/440-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/440-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/440-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2284-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2792-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2792-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4544-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4544-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/4544-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4816-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4816-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads