modiloader | fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6c

Analysis

max time kernel
118s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 17:44

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General

Target

fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
Size

300KB
MD5

d925115770e6671a4a2b67dc939d0500
SHA1

6a84962ecf768d29d5ac970341f882e54773fc31
SHA256

fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6c
SHA512

2a010a25c9851941d981becc2c0c37315ec39cbda1716c71e62492552018a0a75daa1ff13ba8bbed8ba064312da2d067514e3cc9ebf03c1217abb1d9f6edb3d0
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38GD:UsxD5cwohO+O1sVG0/pZ6iPC8t

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/1944-47-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1944-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1944-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1944-58-0x0000000000400000-0x0000000000414000-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	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe

Executes dropped EXE 3 IoCs

pid	Process
4296	csrsll.exe
2284	csrsll.exe
1944	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 3996 set thread context of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 4296 set thread context of 2284	4296	csrsll.exe	95
PID 4296 set thread context of 1944	4296	csrsll.exe	96

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2636-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2636-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2636-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2636-36-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1944-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1944-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1944-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2284-48-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2636-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2284-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1944-58-0x0000000000400000-0x0000000000414000-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	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.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
3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
4296	csrsll.exe
2284	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 3996 wrote to memory of 2636	3996	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	82
PID 2636 wrote to memory of 1124	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	87
PID 2636 wrote to memory of 1124	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	87
PID 2636 wrote to memory of 1124	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	87
PID 1124 wrote to memory of 628	1124	cmd.exe	90
PID 1124 wrote to memory of 628	1124	cmd.exe	90
PID 1124 wrote to memory of 628	1124	cmd.exe	90
PID 2636 wrote to memory of 4296	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	91
PID 2636 wrote to memory of 4296	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	91
PID 2636 wrote to memory of 4296	2636	fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe	91
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 2284	4296	csrsll.exe	95
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96
PID 4296 wrote to memory of 1944	4296	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
"C:\Users\Admin\AppData\Local\Temp\fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Users\Admin\AppData\Local\Temp\fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe
  "C:\Users\Admin\AppData\Local\Temp\fdb84156a75a1ed6a36120db88383c2d3ab51dbc89c7e6b5b137dd66c7834a6cN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KOJRF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - 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:628
- - 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:4296
  - - 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:1944

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\KOJRF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
d71b4526118046af9a9e3e25fe670de5

SHA1
1b171aa0d8ec0a0ac648de373f801fe0a13b2e1b

SHA256
70851eb2453ba8772ba4547af0ce32c8fa04665750e6963cb405dfe9de9b138b

SHA512
3a665199f469c0d5b8300a272ca38157f4d35f9bbedaad0e0421ce59e7b921c6a95ca63a67a6de971488fa123975590b5415a30600e66e8cf31e5a56c586529a

Download Submit
memory/1944-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1944-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2284-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2284-48-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-36-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2636-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3996-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3996-5-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/3996-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/3996-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4296-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4296-37-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4296-33-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/4296-52-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads