modiloader | fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15/01/2025, 11:05

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General

Target

fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
Size

90KB
MD5

23c3e2ff7eae426028bcf42256c51d9a
SHA1

b0a876af924ecb0d4bcffdbb909271ae8b9459dc
SHA256

fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa
SHA512

ec4c628b6e3f7d9c3ef8d97dd0748ef82fa8cf23e547895fa85f380cc308148c1015378da4c2cd0bad18eb40e798b777ec4856007d2f06810e6dd6b63d741986
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 3 IoCs

resource	yara_rule
behavioral2/memory/4424-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4424-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4424-54-0x0000000000400000-0x0000000000414000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe

Executes dropped EXE 3 IoCs

pid	Process
5064	csrsll.exe
4492	csrsll.exe
4424	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-1-5-21-2878641211-696417878-3864914810-1000\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 4032 set thread context of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 5064 set thread context of 4492	5064	csrsll.exe	99
PID 5064 set thread context of 4424	5064	csrsll.exe	100

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4032-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4032-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3688-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3688-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4032-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3688-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c99-28.dat	upx
behavioral2/memory/5064-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3688-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4424-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5064-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4424-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4424-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4424-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5064-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3688-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4492-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4424-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4492-61-0x0000000000400000-0x000000000040B000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe
Token: SeDebugPrivilege	4492	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
5064	csrsll.exe
4492	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4032 wrote to memory of 3688	4032	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 3688 wrote to memory of 1512	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	86
PID 3688 wrote to memory of 1512	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	86
PID 3688 wrote to memory of 1512	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	86
PID 1512 wrote to memory of 3844	1512	cmd.exe	90
PID 1512 wrote to memory of 3844	1512	cmd.exe	90
PID 1512 wrote to memory of 3844	1512	cmd.exe	90
PID 3688 wrote to memory of 5064	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	91
PID 3688 wrote to memory of 5064	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	91
PID 3688 wrote to memory of 5064	3688	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	91
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4492	5064	csrsll.exe	99
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100
PID 5064 wrote to memory of 4424	5064	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
"C:\Users\Admin\AppData\Local\Temp\fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Users\Admin\AppData\Local\Temp\fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
  "C:\Users\Admin\AppData\Local\Temp\fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3688
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\HLIIU.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1512
  - - 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:3844
- - 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:5064
  - - 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:4492
  - - 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:4424

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\HLIIU.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
834780aecc175abb5a45dc7dd364627b

SHA1
11cbee02d75a4c3740fa43a49d94521e375798f3

SHA256
eb492886fb03efb1789516404ba30ac4e1eee67f434346c22b628a9e5de2d5cc

SHA512
30be453162dff0656f2e55df5af82f66b99ec9e14eb2651c2386d2c6014bcc4df25eb81e9f0f8b663865c31c510463080d6bddd79e47d478335f5a90f9aced08

Download Submit
memory/3688-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3688-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3688-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3688-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3688-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3688-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4032-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4032-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4032-4-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/4032-3-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/4032-6-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/4032-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4424-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4424-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4424-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4424-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4424-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4492-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4492-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5064-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5064-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5064-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads