modiloader | d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424e

Analysis

max time kernel
119s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 23:25

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General

Target

d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
Size

90KB
MD5

bff237634fb187cdc1595c0aa8cf51a0
SHA1

75db73fee6fa1cf28f88c16bbd6700c7d373351f
SHA256

d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424e
SHA512

05c0f2eb012e6a8fee1a1d3acf71b722123a112757f6ad73eeb2ca2ebc6599625c9a352e02c4ec20a4c087081200e9d4d61af6265661061770315465c49b7068
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD3:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3B

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/2520-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2520-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2520-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2520-60-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe

Executes dropped EXE 3 IoCs

pid	Process
5032	csrsll.exe
1932	csrsll.exe
2520	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-1-5-21-3227495264-2217614367-4027411560-1000\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 4616 set thread context of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 5032 set thread context of 1932	5032	csrsll.exe	95
PID 5032 set thread context of 2520	5032	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4616-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1172-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4616-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb7-28.dat	upx
behavioral2/memory/1172-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5032-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5032-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2520-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2520-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2520-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2520-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2520-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5032-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1932-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2520-60-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
5032	csrsll.exe
1932	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 4616 wrote to memory of 1172	4616	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	86
PID 1172 wrote to memory of 4496	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	87
PID 1172 wrote to memory of 4496	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	87
PID 1172 wrote to memory of 4496	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	87
PID 4496 wrote to memory of 4996	4496	cmd.exe	90
PID 4496 wrote to memory of 4996	4496	cmd.exe	90
PID 4496 wrote to memory of 4996	4496	cmd.exe	90
PID 1172 wrote to memory of 5032	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	91
PID 1172 wrote to memory of 5032	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	91
PID 1172 wrote to memory of 5032	1172	d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe	91
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 1932	5032	csrsll.exe	95
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96
PID 5032 wrote to memory of 2520	5032	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
"C:\Users\Admin\AppData\Local\Temp\d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe
  "C:\Users\Admin\AppData\Local\Temp\d273bdebb000cb9c85cd392e026b67fac7ed1b2f43cc9ae8a2255fef281c424eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1172
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WOVKU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4496
  - - 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:4996
- - 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:5032
  - - 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:1932
  - - 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:2520

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\WOVKU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0f4b9579e3378d1d9ae312b564c9a486

SHA1
1c92f74d0a5111b782d0c554863b96cbe24b39d2

SHA256
c887b628c56ea916e54a0acefab6d9ee104bc0575c66b68c1acf1db23c6250bc

SHA512
64d0a5fd1b7583fa1e6c6a72041bb292a670ad4e96663cd4d6ae1e6ba0bd3881fee0550e1638fb3b3e002c0cabc903a718b4eebd1620b58b23c786febdc270fa

Download Submit
memory/1172-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1172-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1172-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1172-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1172-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1172-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1932-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2520-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2520-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2520-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2520-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2520-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2520-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4616-4-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/4616-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4616-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4616-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4616-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/4616-6-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/5032-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5032-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5032-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads