modiloader | 3737173bcc98e3de6262ebb491c4fec9066088a7ae25ae571dae00c8f565f63b

Analysis

max time kernel
119s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 12:54

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General

Target

2593e3759baf1eeeb6fd80bde52b0020N.exe
Size

326KB
MD5

2593e3759baf1eeeb6fd80bde52b0020
SHA1

c7f0b4a1e6edc2680514ec3ccdceccb7490ebd2e
SHA256

3737173bcc98e3de6262ebb491c4fec9066088a7ae25ae571dae00c8f565f63b
SHA512

ab5662ee15e89154a6941f56114d53142dbee326c10a498c274ad37dc076bf14647d52ac405a51c158e961060f66320f8d21ebf3b25f375acc8373e2e6188877
SSDEEP

3072:h0e2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:h0sxD5cwohO+O1sVG0/pZ6iPC8

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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/2528-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2528-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2528-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2528-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	2593e3759baf1eeeb6fd80bde52b0020N.exe

Executes dropped EXE 3 IoCs

pid	Process
4940	csrsll.exe
4764	csrsll.exe
2528	csrsll.exe

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4600-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4600-5-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1928-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1928-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4600-10-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1928-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1928-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000f000000023a44-28.dat	upx
behavioral2/memory/4940-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1928-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4940-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/4940-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2528-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2528-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2528-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4940-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2528-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2528-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1928-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4764-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2528-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-2629364133-3182087385-364449604-1000\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 4600 set thread context of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4940 set thread context of 4764	4940	csrsll.exe	91
PID 4940 set thread context of 2528	4940	csrsll.exe	92

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	2593e3759baf1eeeb6fd80bde52b0020N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2593e3759baf1eeeb6fd80bde52b0020N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe
Token: SeDebugPrivilege	4764	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4600	2593e3759baf1eeeb6fd80bde52b0020N.exe
1928	2593e3759baf1eeeb6fd80bde52b0020N.exe
4940	csrsll.exe
4764	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 4600 wrote to memory of 1928	4600	2593e3759baf1eeeb6fd80bde52b0020N.exe	85
PID 1928 wrote to memory of 4608	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	86
PID 1928 wrote to memory of 4608	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	86
PID 1928 wrote to memory of 4608	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	86
PID 4608 wrote to memory of 3300	4608	cmd.exe	89
PID 4608 wrote to memory of 3300	4608	cmd.exe	89
PID 4608 wrote to memory of 3300	4608	cmd.exe	89
PID 1928 wrote to memory of 4940	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	90
PID 1928 wrote to memory of 4940	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	90
PID 1928 wrote to memory of 4940	1928	2593e3759baf1eeeb6fd80bde52b0020N.exe	90
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 4764	4940	csrsll.exe	91
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92
PID 4940 wrote to memory of 2528	4940	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\2593e3759baf1eeeb6fd80bde52b0020N.exe
"C:\Users\Admin\AppData\Local\Temp\2593e3759baf1eeeb6fd80bde52b0020N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Users\Admin\AppData\Local\Temp\2593e3759baf1eeeb6fd80bde52b0020N.exe
  "C:\Users\Admin\AppData\Local\Temp\2593e3759baf1eeeb6fd80bde52b0020N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MDYCN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4608
  - - 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:3300
- - 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:4940
  - - 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:4764
  - - 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:2528

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\MDYCN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
66a30639802d25692518aaaf3c5073a4

SHA1
aa1ab9647a947e814e4535f65565982cb61b5fb9

SHA256
59cfa8c49760562b95f3fedacd682792384d9980d6624dc0a6f631af7e271cd3

SHA512
3438d3540eb528ef38cea6853c1a67bc0094491c7e4c5e130f9739eaf6c02884fd1bc5f9b4aeddb0b0adeb0a4dd2a718bb5537e560134db6fb4042eaced3149b

Download Submit
memory/1928-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1928-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1928-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1928-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1928-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1928-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2528-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2528-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2528-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2528-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2528-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2528-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4600-4-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/4600-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4600-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/4600-10-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4600-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/4600-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4764-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4940-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4940-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4940-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4940-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads