modiloader | 6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06

Analysis

max time kernel
120s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 01:06

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General

Target

6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
Size

326KB
MD5

8808d5120f2d920dee53f2859d05b400
SHA1

3c77559956de7d0260271364615f866450eb7968
SHA256

6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06
SHA512

11666538a0277f0e5d6048d152eec5d5c5b2b580782cd0d74e0e8c2e10bedf67bb4c7245a293409b036e30a0efbe306c268dac961afd732e7c404f4a6cb8515e
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+O1sVG0/pZ6iPC8

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/4660-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4660-60-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe

Executes dropped EXE 3 IoCs

pid	Process
4320	csrsll.exe
4912	csrsll.exe
4660	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-1-5-21-2437139445-1151884604-3026847218-1000\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 3240 set thread context of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 4320 set thread context of 4912	4320	csrsll.exe	105
PID 4320 set thread context of 4660	4320	csrsll.exe	106

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3240-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3240-4-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4896-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4896-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3240-10-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4896-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4896-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000e000000023b74-28.dat	upx
behavioral2/memory/4320-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4896-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4320-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4320-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4660-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4660-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4660-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4660-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4896-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4320-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4912-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4660-60-0x0000000000400000-0x0000000000414000-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	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.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	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe
Token: SeDebugPrivilege	4912	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
4320	csrsll.exe
4912	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 3240 wrote to memory of 4896	3240	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	94
PID 4896 wrote to memory of 3528	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	95
PID 4896 wrote to memory of 3528	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	95
PID 4896 wrote to memory of 3528	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	95
PID 3528 wrote to memory of 1712	3528	cmd.exe	99
PID 3528 wrote to memory of 1712	3528	cmd.exe	99
PID 3528 wrote to memory of 1712	3528	cmd.exe	99
PID 4896 wrote to memory of 4320	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	100
PID 4896 wrote to memory of 4320	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	100
PID 4896 wrote to memory of 4320	4896	6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe	100
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4912	4320	csrsll.exe	105
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106
PID 4320 wrote to memory of 4660	4320	csrsll.exe	106

C:\Users\Admin\AppData\Local\Temp\6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
"C:\Users\Admin\AppData\Local\Temp\6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Users\Admin\AppData\Local\Temp\6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe
  "C:\Users\Admin\AppData\Local\Temp\6a1c65e57a0b014b6e353374c7a17964ce34f409c3888f894e1211712270ef06N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ESRDL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3528
  - - 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:1712
- - 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:4320
  - - 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:4912
  - - 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:4660

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\ESRDL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
2c3f47ed44411388046334ff57fa9af3

SHA1
e23126b52b340ca76193e92b85cecb3eceec8db4

SHA256
2e14b7405dca8ba8639f70547f6ad6ca591d6a0770ddab14f4609ae586dab7d5

SHA512
c3e7b4916a4c2349cda59e7a70f29b1d71a6133c2d7ad7d7dde2c5c01cde96a2aa73330e3d81e2dce7ea666d3637eaac61fd6c37c44a937db188c9e5e00de185

Download Submit
memory/3240-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/3240-5-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3240-4-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3240-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/3240-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3240-10-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4320-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4320-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4320-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4320-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4660-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4660-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4896-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4912-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads