modiloader | 03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16e

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
29/11/2024, 02:31

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General

Target

03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
Size

90KB
MD5

0fcd58b414f993a0e467ad9a6412c160
SHA1

e0e7fb5254f286cfa100084eb9da1fe6b08057fd
SHA256

03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16e
SHA512

6f151f0c3d9ab43ac7b7f5416212b9ac2b782736acae7ae3d4da596d33c7cf4c76e3da4ed0c3f7b9a000426a635fd41851415f75b3d68b1d934f269cf1e33a73
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/3092-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3092-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3092-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3092-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe

Executes dropped EXE 3 IoCs

pid	Process
2464	csrsll.exe
2164	csrsll.exe
3092	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 1768 set thread context of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 2464 set thread context of 2164	2464	csrsll.exe	96
PID 2464 set thread context of 3092	2464	csrsll.exe	97

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1768-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1768-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2268-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2268-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2268-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1768-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000c000000023b8c-29.dat	upx
behavioral2/memory/2464-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2268-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2464-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2464-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3092-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3092-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3092-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2464-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3092-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3092-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2268-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2164-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3092-61-0x0000000000400000-0x0000000000414000-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	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.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	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe
Token: SeDebugPrivilege	2164	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
2464	csrsll.exe
2164	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 1768 wrote to memory of 2268	1768	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	83
PID 2268 wrote to memory of 4604	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	84
PID 2268 wrote to memory of 4604	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	84
PID 2268 wrote to memory of 4604	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	84
PID 4604 wrote to memory of 920	4604	cmd.exe	88
PID 4604 wrote to memory of 920	4604	cmd.exe	88
PID 4604 wrote to memory of 920	4604	cmd.exe	88
PID 2268 wrote to memory of 2464	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	89
PID 2268 wrote to memory of 2464	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	89
PID 2268 wrote to memory of 2464	2268	03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe	89
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 2164	2464	csrsll.exe	96
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97
PID 2464 wrote to memory of 3092	2464	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
"C:\Users\Admin\AppData\Local\Temp\03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe
  "C:\Users\Admin\AppData\Local\Temp\03ef07ed74458339ad7d6224746edc139c00819a36d9601242146554368ac16eN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2268
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BPFSO.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4604
  - - 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:920
- - 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:2464
  - - 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:2164
  - - 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:3092

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\BPFSO.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
54483cd33f347702b084bfc64d363446

SHA1
4ca587c6a01f593029e8698ebf0efb6a10a2a5e8

SHA256
11fd88664cfcf14d48ae2973687764b722aa0a202b4cb6f6f372985d2949bf25

SHA512
e9925ba8ca36af75b77a5dd199d4b3261011a9f5794fb3a170cf76ed7da316c987113252866624b9f9dbd414c88feefb6610387ff6ddda615d8f839205d4128e

Download Submit
memory/1768-3-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/1768-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1768-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1768-5-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/1768-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1768-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2164-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2464-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2464-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2464-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2464-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3092-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3092-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads