modiloader | f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea

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
21/01/2025, 14:45

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General

Target

f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
Size

90KB
MD5

3f667b7a1b17fffa4cabe48898adb95f
SHA1

10ab9afe4171d689ce72f10f261a66b3502daf24
SHA256

f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea
SHA512

801823e644807af47d7b604dee5f343cde97f436942b64a320d322d4f1824b250d9f3f7958cf91b3bcff2b51b92065a45e29ab3a0eae455947575cf68c182e5b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3j

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/2308-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2308-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2308-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2308-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe

Executes dropped EXE 3 IoCs

pid	Process
2716	csrsll.exe
4524	csrsll.exe
2308	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-1-5-21-3350944739-639801879-157714471-1000\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 3548 set thread context of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 2716 set thread context of 4524	2716	csrsll.exe	95
PID 2716 set thread context of 2308	2716	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3548-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3548-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1764-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1764-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3548-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1764-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c66-29.dat	upx
behavioral2/memory/1764-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2716-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2716-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2308-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2308-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2308-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2308-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2308-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1764-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2308-61-0x0000000000400000-0x0000000000414000-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	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe
Token: SeDebugPrivilege	4524	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
2716	csrsll.exe
4524	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 3548 wrote to memory of 1764	3548	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	83
PID 1764 wrote to memory of 1272	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 1764 wrote to memory of 1272	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 1764 wrote to memory of 1272	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	84
PID 1272 wrote to memory of 3148	1272	cmd.exe	88
PID 1272 wrote to memory of 3148	1272	cmd.exe	88
PID 1272 wrote to memory of 3148	1272	cmd.exe	88
PID 1764 wrote to memory of 2716	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	89
PID 1764 wrote to memory of 2716	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	89
PID 1764 wrote to memory of 2716	1764	f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe	89
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 4524	2716	csrsll.exe	95
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96
PID 2716 wrote to memory of 2308	2716	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
"C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe
  "C:\Users\Admin\AppData\Local\Temp\f883ac8c7fee02b1acf75b51f04f7367a82d85eff503d2d5db9c40496969dfea.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DIXYV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1272
  - - 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:3148
- - 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:2716
  - - 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:4524
  - - 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:2308

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\DIXYV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8710f169f200acfb582931acd3e859c3

SHA1
d71e14703fee236fffa4851d560ceb0f8fa54942

SHA256
4fff742f68a6c5cc81d5cd785cc97703c585f6ef507e395b9d7d33d48eb460f7

SHA512
73226534c168401ef3b824effc2ac20cc01f95c7ff36676bc092f566b4e186e6fb2e9ae72481de387ccea597fd5ef9c5ad96f41fa98de371c3877793f3490e7c

Download Submit
memory/1764-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1764-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1764-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1764-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1764-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2308-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2308-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2308-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2308-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2308-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2308-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2716-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2716-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3548-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3548-3-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/3548-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3548-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3548-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3548-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4524-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads