modiloader | f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b

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
01/12/2024, 04:50

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General

Target

f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
Size

300KB
MD5

83ef67bdbe16f0cb8691b5311fdb9804
SHA1

9f75527d3c8ac7fabbe282fe37e817b54877e3ac
SHA256

f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b
SHA512

897f2618e6cb7b62ce21473fd6f467af01e87a5fa04fa87389397a1b8d1bf47b96b92be74cdbea7e2edcefcbbce594a9a558a31846f723f99a753f1bcfe75b47
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38Gl:UsxD5cwohO+O1sVG0/pZ6iPC8X

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/1972-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1972-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1972-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1972-58-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe

Executes dropped EXE 3 IoCs

pid	Process
2132	csrsll.exe
1204	csrsll.exe
1972	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-1-5-21-4089630652-1596403869-279772308-1000\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 4520 set thread context of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 2132 set thread context of 1204	2132	csrsll.exe	95
PID 2132 set thread context of 1972	2132	csrsll.exe	96

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4108-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4108-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4108-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4108-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1972-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1972-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4108-52-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1972-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1972-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1972-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1204-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1972-58-0x0000000000400000-0x0000000000414000-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	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	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe
Token: SeDebugPrivilege	1204	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
2132	csrsll.exe
1204	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4520 wrote to memory of 4108	4520	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	82
PID 4108 wrote to memory of 3588	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	83
PID 4108 wrote to memory of 3588	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	83
PID 4108 wrote to memory of 3588	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	83
PID 3588 wrote to memory of 2388	3588	cmd.exe	86
PID 3588 wrote to memory of 2388	3588	cmd.exe	86
PID 3588 wrote to memory of 2388	3588	cmd.exe	86
PID 4108 wrote to memory of 2132	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	87
PID 4108 wrote to memory of 2132	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	87
PID 4108 wrote to memory of 2132	4108	f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe	87
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1204	2132	csrsll.exe	95
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96
PID 2132 wrote to memory of 1972	2132	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
"C:\Users\Admin\AppData\Local\Temp\f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Users\Admin\AppData\Local\Temp\f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe
  "C:\Users\Admin\AppData\Local\Temp\f642c212d3bbd63b26a845825179930ec9d210637f19a90f4c96a24a9141c10b.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4108
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CGBJU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3588
  - - 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:2388
- - 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:2132
  - - 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:1204
  - - 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:1972

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\CGBJU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
c3c36ed6c46b93c4fa8db28c71a5f226

SHA1
cb035c35be82e0aaac3784d4a847e99e28681a45

SHA256
0575ada5e93ef1a41e83f24cd2322d79d2ccbf8d906358cf975c490abbc44516

SHA512
51af4cf23bdf7d84aa8ab19d8da995f8d943b0c7684b9e3fabb4d5406724db20aa49a8fb1ed4391e3483d5f67bb3ec73e9ea33bcaa3f7e473e6415d5e1fd93e7

Download Submit
memory/1204-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1972-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2132-51-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2132-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2132-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4108-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4108-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4108-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4108-52-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4108-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4520-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4520-5-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4520-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4520-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads