modiloader | 13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13

Analysis

max time kernel
150s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 17:51

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General

Target

13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
Size

90KB
MD5

51d70a54f08b4cf59421eb53c7311032
SHA1

6009ccb2a434567941c04434dbd213d6961099f0
SHA256

13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13
SHA512

1fbf21eca78530d345391a31822b0f0fd26933b13121363b4fc97a8c3c57dec62c831c155dc4ea5365c09b96ef36f7e3f8f6fc14a6c2c9300eccd8266ac3d759
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDa:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE30

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 1 IoCs

resource	yara_rule
behavioral1/memory/828-265-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
832	csrsll.exe
904	csrsll.exe
828	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.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-1-5-21-3692679935-4019334568-335155002-1000\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 2876 set thread context of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 832 set thread context of 904	832	csrsll.exe	35
PID 832 set thread context of 828	832	csrsll.exe	36

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2876-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2876-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2876-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2876-81-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2876-92-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/908-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/908-109-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/908-106-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2876-105-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/908-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/908-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/908-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0004000000018334-134.dat	upx
behavioral1/memory/832-153-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/908-155-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/832-159-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/832-195-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/828-251-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/832-257-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/908-261-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/904-262-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/828-265-0x0000000000400000-0x0000000000414000-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	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe
Token: SeDebugPrivilege	904	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
832	csrsll.exe
904	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 2876 wrote to memory of 908	2876	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	30
PID 908 wrote to memory of 1956	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	31
PID 908 wrote to memory of 1956	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	31
PID 908 wrote to memory of 1956	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	31
PID 908 wrote to memory of 1956	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	31
PID 1956 wrote to memory of 2960	1956	cmd.exe	33
PID 1956 wrote to memory of 2960	1956	cmd.exe	33
PID 1956 wrote to memory of 2960	1956	cmd.exe	33
PID 1956 wrote to memory of 2960	1956	cmd.exe	33
PID 908 wrote to memory of 832	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	34
PID 908 wrote to memory of 832	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	34
PID 908 wrote to memory of 832	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	34
PID 908 wrote to memory of 832	908	13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe	34
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 904	832	csrsll.exe	35
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36
PID 832 wrote to memory of 828	832	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
"C:\Users\Admin\AppData\Local\Temp\13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe
  "C:\Users\Admin\AppData\Local\Temp\13c2b35f4462d1fcba2ed92b6ab4f42fc0583dc9a91f5f92e39d34cbbb8dea13.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:908
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\RCAFX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1956
  - - 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:2960
- - 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:832
  - - 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:904
  - - 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:828

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

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\RCAFX.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b9094e24262d19b963edd56ad002dedb

SHA1
712cae6ac09bc7f75ee4f8fdb2803503b93369b5

SHA256
94f4192498e12d781d6f929179a6ae11b5f49355ef2e7dfccc9f9ff8ce1389fa

SHA512
39f612eadc8daca7fca1e9a3d01783e5e3af6c8368cf836f1a77a4930f35ada68d8c017633737e3aa6e646e5bb4780614d5871bfd101a8aa6c8606168d4ab10d

Download Submit
memory/828-265-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/828-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/832-257-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/832-172-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/832-183-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/832-195-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/832-162-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/832-159-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/832-153-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/904-262-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-155-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-148-0x0000000001EA0000-0x0000000001EF3000-memory.dmp

Filesize
332KB

Download
memory/908-261-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-109-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-106-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-157-0x0000000001EA0000-0x0000000001EF3000-memory.dmp

Filesize
332KB

Download
memory/908-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-100-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/908-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/908-149-0x0000000001EA0000-0x0000000001EF3000-memory.dmp

Filesize
332KB

Download
memory/908-151-0x0000000001EA0000-0x0000000001EF3000-memory.dmp

Filesize
332KB

Download
memory/2876-43-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2876-73-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/2876-92-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2876-93-0x00000000027C0000-0x0000000002813000-memory.dmp

Filesize
332KB

Download
memory/2876-82-0x0000000000330000-0x0000000000332000-memory.dmp

Filesize
8KB

Download
memory/2876-105-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2876-63-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/2876-81-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2876-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2876-27-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2876-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2876-17-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2876-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2876-31-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2876-7-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2876-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads