modiloader | 8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8

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
01-11-2024 14:59

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General

Target

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
Size

338KB
MD5

a6bdcd6f1b10c86b88f8be60b25f29b1
SHA1

ab2840ed40b083ccf1e4045e93d3095530239587
SHA256

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8
SHA512

31f3d3bc5cd507f4e5c04db5bf23b2f8f1e67905e5d9a0be929e0617b01c47a5bdefc50f89adc1e8bd0988dbd8dc1c6910e5d58be47c8375124d18f412701f2b
SSDEEP

3072:bc3sBG7mXh7m/zZM3jAbNOM6CNtDCZFc/:w3sBz0Z4Mj72F

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

Processes:

resource	yara_rule
behavioral2/memory/4224-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4224-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4224-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4224-59-0x0000000000400000-0x0000000000414000-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

Processes:

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
2080	csrsll.exe
888	csrsll.exe
4224	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.execsrsll.exe

description	pid	Process	procid_target
PID 4976 set thread context of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 2080 set thread context of 888	2080	csrsll.exe	94
PID 2080 set thread context of 4224	2080	csrsll.exe	95

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4976-0-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/3432-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3432-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3432-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4976-11-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/files/0x0003000000022efc-26.dat	upx
behavioral2/memory/2080-34-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/2080-37-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/2080-38-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/4224-41-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4224-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4224-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4224-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4224-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3432-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2080-55-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/3432-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/888-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4224-59-0x0000000000400000-0x0000000000414000-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

Processes:

cmd.exereg.execsrsll.execsrsll.execsrsll.exe8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe

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	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe
Token: SeDebugPrivilege	888	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.execsrsll.execsrsll.exe

pid	Process
4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
2080	csrsll.exe
888	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 4976 wrote to memory of 3432	4976	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	87
PID 3432 wrote to memory of 1080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	89
PID 3432 wrote to memory of 1080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	89
PID 3432 wrote to memory of 1080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	89
PID 1080 wrote to memory of 4696	1080	cmd.exe	92
PID 1080 wrote to memory of 4696	1080	cmd.exe	92
PID 1080 wrote to memory of 4696	1080	cmd.exe	92
PID 3432 wrote to memory of 2080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	93
PID 3432 wrote to memory of 2080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	93
PID 3432 wrote to memory of 2080	3432	8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe	93
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 888	2080	csrsll.exe	94
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95
PID 2080 wrote to memory of 4224	2080	csrsll.exe	95

C:\Users\Admin\AppData\Local\Temp\8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
"C:\Users\Admin\AppData\Local\Temp\8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Users\Admin\AppData\Local\Temp\8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe
  "C:\Users\Admin\AppData\Local\Temp\8f5936f3ebe5598bea2c561c4dc118eeb836ad393ec11e4ccfd9fde43a461cd8.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CRSPY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1080
  - - 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:4696
- - 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:2080
  - - 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:888
  - - 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:4224

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\CRSPY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
338KB

MD5
652e1f00b403f5f409180f0a2c09df41

SHA1
b967d82a216dbfe068a6c36b81d8ed857ec74b07

SHA256
be70859eea9537548d97d993beb74e522f5714a51345141b70457ef19d2ea9a3

SHA512
c62906b8fc5b454377a977129aca72063d441ea3f9da124d29b1691a96905fa1532a7cbdda86248c8c9c25dedf22ef2545f3bf021829f098ad5beb909c058589

Download Submit
memory/888-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2080-55-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2080-38-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2080-37-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2080-34-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3432-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4224-41-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4224-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4224-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4224-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4224-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4224-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4976-11-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/4976-4-0x0000000002B90000-0x0000000002B91000-memory.dmp

Filesize
4KB

Download
memory/4976-0-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/4976-3-0x0000000002320000-0x0000000002321000-memory.dmp

Filesize
4KB

Download