modiloader | 83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/12/2024, 08:40

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General

Target

83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
Size

90KB
MD5

8408cb27871ce0e6a981125be072bad1
SHA1

65528c3a1f8be6de5fa2b73c5808d1b049ab06e8
SHA256

83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9
SHA512

8cc7cf8a85f08977223118a3fe78c2298eb0432a27afe2c31fb90b1fc9739e4f03242d5524d28adbcbe862d012b24229ff6c704560cac098851153d6837af813
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3T

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/5084-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5084-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5084-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5084-61-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe

Executes dropped EXE 3 IoCs

pid	Process
3800	csrsll.exe
3216	csrsll.exe
5084	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 3924 set thread context of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3800 set thread context of 3216	3800	csrsll.exe	95
PID 3800 set thread context of 5084	3800	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3924-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3924-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2548-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2548-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3924-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2548-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c96-28.dat	upx
behavioral2/memory/2548-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3800-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3800-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5084-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5084-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5084-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3800-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5084-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5084-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2548-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3216-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5084-61-0x0000000000400000-0x0000000000414000-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	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.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	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe
Token: SeDebugPrivilege	3216	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
3800	csrsll.exe
3216	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 3924 wrote to memory of 2548	3924	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	86
PID 2548 wrote to memory of 4424	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	87
PID 2548 wrote to memory of 4424	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	87
PID 2548 wrote to memory of 4424	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	87
PID 4424 wrote to memory of 1760	4424	cmd.exe	90
PID 4424 wrote to memory of 1760	4424	cmd.exe	90
PID 4424 wrote to memory of 1760	4424	cmd.exe	90
PID 2548 wrote to memory of 3800	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	91
PID 2548 wrote to memory of 3800	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	91
PID 2548 wrote to memory of 3800	2548	83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe	91
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 3216	3800	csrsll.exe	95
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96
PID 3800 wrote to memory of 5084	3800	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
"C:\Users\Admin\AppData\Local\Temp\83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Users\Admin\AppData\Local\Temp\83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe
  "C:\Users\Admin\AppData\Local\Temp\83d43498f1b34ae3764f4aa077fbcb97543cc640edf11a1455a5d06d6367a2c9.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PNRMU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4424
  - - 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:1760
- - 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:3800
  - - 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:3216
  - - 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:5084

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\PNRMU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
ba501cb79f4ec28303e37a4f3622c9d2

SHA1
d74141e73f52560ac0f2d706708a72fbe7694358

SHA256
e5d07ab278b2576db98b4ca8a80762afdf46eb99c6287758abcb6a246209ba1e

SHA512
8e29f40f4da804081e2879d113e1ad6c0b34f32080154260129b1da844d0ade9eda360614af0f40d83dcd5d5c6b51c3bca241435ac4d9e20687609c7239eb071

Download Submit
memory/2548-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2548-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2548-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2548-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2548-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2548-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3216-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3800-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3800-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3800-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3924-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/3924-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3924-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3924-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/3924-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/3924-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5084-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5084-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads