modiloader | 8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57b

Analysis

max time kernel
119s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 12:25

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General

Target

8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
Size

90KB
MD5

b9b93c0ec9040edaa11db9c836d3c170
SHA1

9aa95882f999a1a193334f242fb75bba477e3825
SHA256

8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57b
SHA512

5a9674af3369cdbdbf239ab6c04af379caaccf5faba9e88ec97f0a0f1617208492ce52d13b43d65ed29132de33170d1768b3a52b0b4f1fa30521cdcc619af831
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/1652-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1652-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1652-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1652-64-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe

Executes dropped EXE 3 IoCs

pid	Process
2096	csrsll.exe
3276	csrsll.exe
1652	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-1-5-21-2045521122-590294423-3465680274-1000\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 5056 set thread context of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 2096 set thread context of 3276	2096	csrsll.exe	96
PID 2096 set thread context of 1652	2096	csrsll.exe	97

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5056-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1660-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1660-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1660-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5056-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0009000000023c89-29.dat	upx
behavioral2/memory/2096-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1660-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2096-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1652-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1652-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1652-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1652-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1652-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2096-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1660-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3276-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1652-64-0x0000000000400000-0x0000000000414000-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	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.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	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe
Token: SeDebugPrivilege	3276	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
2096	csrsll.exe
3276	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 5056 wrote to memory of 1660	5056	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	83
PID 1660 wrote to memory of 4316	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	84
PID 1660 wrote to memory of 4316	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	84
PID 1660 wrote to memory of 4316	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	84
PID 4316 wrote to memory of 1980	4316	cmd.exe	88
PID 4316 wrote to memory of 1980	4316	cmd.exe	88
PID 4316 wrote to memory of 1980	4316	cmd.exe	88
PID 1660 wrote to memory of 2096	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	89
PID 1660 wrote to memory of 2096	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	89
PID 1660 wrote to memory of 2096	1660	8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe	89
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 3276	2096	csrsll.exe	96
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97
PID 2096 wrote to memory of 1652	2096	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
"C:\Users\Admin\AppData\Local\Temp\8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe
  "C:\Users\Admin\AppData\Local\Temp\8931cd1233bae5717e4ae055a419dc9c0c02d716b9aa4607c37b39c79abce57bN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MALUL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4316
  - - 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:1980
- - 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:2096
  - - 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:3276
  - - 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:1652

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\MALUL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
bbabc7b309748a42f093b59cba650bfa

SHA1
e06371c0d0c933d0741dbf0b7208dfa7cfe4242c

SHA256
972485ab6df5256f3d95ce2d7504827ba341c98282ea8177deefe4db338eea54

SHA512
677255adf0b56c2ad5e4f56403d48e6890149c36a2f97744c86cdca26b032f0316264550e31ebf8876772e16657bb6f032227bc2d65714ee5d49a7ff464ad926

Download Submit
memory/1652-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1652-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1660-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1660-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1660-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2096-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3276-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5056-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5056-5-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/5056-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/5056-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5056-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5056-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads