modiloader | 4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2025 01:16

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General

Target

4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
Size

90KB
MD5

e613154a8d8a88041bf1288813824865
SHA1

cd22f88f30185603362e15d66d05bd11a26c8634
SHA256

4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7
SHA512

c7fae80f114d4b310ea9d1de6a78fbb56e59f2a2a626e58a5dea941e6c558e172377b486ea7bbe36a4be6b49f4e9a174122bee1938bea4df56f76f2ed3b3d33a
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDv:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE31

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/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2064-62-0x0000000000400000-0x0000000000414000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe

Executes dropped EXE 3 IoCs

pid	Process
2084	csrsll.exe
4988	csrsll.exe
2064	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-1-5-21-493223053-2004649691-1575712786-1000\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 2624 set thread context of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2084 set thread context of 4988	2084	csrsll.exe	101
PID 2084 set thread context of 2064	2084	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2624-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2624-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4116-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4116-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4116-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2624-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c99-29.dat	upx
behavioral2/memory/4116-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2084-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2084-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2064-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2084-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4116-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4988-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2064-62-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe
Token: SeDebugPrivilege	4988	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
2084	csrsll.exe
4988	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 2624 wrote to memory of 4116	2624	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	89
PID 4116 wrote to memory of 4400	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	92
PID 4116 wrote to memory of 4400	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	92
PID 4116 wrote to memory of 4400	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	92
PID 4400 wrote to memory of 1052	4400	cmd.exe	96
PID 4400 wrote to memory of 1052	4400	cmd.exe	96
PID 4400 wrote to memory of 1052	4400	cmd.exe	96
PID 4116 wrote to memory of 2084	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	97
PID 4116 wrote to memory of 2084	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	97
PID 4116 wrote to memory of 2084	4116	4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe	97
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 4988	2084	csrsll.exe	101
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102
PID 2084 wrote to memory of 2064	2084	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
"C:\Users\Admin\AppData\Local\Temp\4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Local\Temp\4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe
  "C:\Users\Admin\AppData\Local\Temp\4f41adcc56a1f4a4ab54f92712d6348580431916aa5688d9408646417f5ffed7.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4116
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RCAEH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4400
  - - 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:1052
- - 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:2084
  - - 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:4988
  - - 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:2064

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\RCAEH.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
18446249b8b3308e0355928c988d7f88

SHA1
05a74eb3b89f81d9ebc1c5a99bdd5d7431855c56

SHA256
8ea629211fadce7b54709a04080c7b1b92f518dc710bd1c1c54d5c4221b21d4f

SHA512
fb68529f66aa45a9593e20d5c13b7923b480611dffdb000ef5536112bc550cde8b220ecd596915a352f9e54926c97d0d24bf8e092048b6696f6f8c258d527298

Download Submit
memory/2064-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2084-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2084-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2624-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/2624-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2624-5-0x0000000002A70000-0x0000000002A72000-memory.dmp

Filesize
8KB

Download
memory/2624-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2624-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2624-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4116-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4116-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4116-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4116-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4116-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4116-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4988-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads