modiloader | fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4

Analysis

max time kernel
119s
max time network
119s
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 18:23

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General

Target

fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
Size

90KB
MD5

01ecae6c9f4312a2c92a73409ca0b330
SHA1

ded134fab9074c51f47c2218eaa0866e5a3f1eb9
SHA256

fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4
SHA512

f432417faca1ba681fa1b63b5e99e934e1faef56bc4d25abf1a066ada1102704bbff751a10236e308df888f4a62943c84b2ec9f8a28b5a6293e80cc7665c8c84
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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/4436-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4436-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4436-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4436-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe

Executes dropped EXE 3 IoCs

pid	Process
3932	csrsll.exe
3508	csrsll.exe
4436	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 4760 set thread context of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 3932 set thread context of 3508	3932	csrsll.exe	103
PID 3932 set thread context of 4436	3932	csrsll.exe	104

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4760-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4760-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4832-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4832-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4760-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4832-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000e000000023b70-28.dat	upx
behavioral2/memory/3932-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4832-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3932-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3932-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4436-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4436-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4436-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4436-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3932-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4436-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4832-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3508-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4436-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe
Token: SeDebugPrivilege	3508	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
3932	csrsll.exe
3508	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4760 wrote to memory of 4832	4760	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	93
PID 4832 wrote to memory of 3712	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	94
PID 4832 wrote to memory of 3712	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	94
PID 4832 wrote to memory of 3712	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	94
PID 3712 wrote to memory of 512	3712	cmd.exe	98
PID 3712 wrote to memory of 512	3712	cmd.exe	98
PID 3712 wrote to memory of 512	3712	cmd.exe	98
PID 4832 wrote to memory of 3932	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	99
PID 4832 wrote to memory of 3932	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	99
PID 4832 wrote to memory of 3932	4832	fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe	99
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 3508	3932	csrsll.exe	103
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104
PID 3932 wrote to memory of 4436	3932	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
"C:\Users\Admin\AppData\Local\Temp\fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe
  "C:\Users\Admin\AppData\Local\Temp\fecf759ddd0b3cbab4a65bd7f6b58e0c48b79f53d30305106c6ea94d46651ce4N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DGRSO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3712
  - - 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:512
- - 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:3932
  - - 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:3508
  - - 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:4436

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\DGRSO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
e49f06fdac174bc398b446ff8ce5c041

SHA1
34fffcf6a8739189539e7566b9c4e6b35a157342

SHA256
01fefc11263eca417a7b8195a470ffbd6284737af7f6ec261d67d601d43610f1

SHA512
3209ffefc491086e7f0102bf34584d4fc64c3870fa70f8803d09030c8f2d95322b9651265de09d89a1d3f0b245f69def97bba2d611121bd4a998844f4f2e8de2

Download Submit
memory/3508-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3932-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3932-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3932-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3932-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4436-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4436-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4436-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4436-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4436-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4436-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4760-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4760-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4760-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4760-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4760-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4832-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads