modiloader | 1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1

Analysis

max time kernel
119s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 00:48

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General

Target

1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
Size

94KB
MD5

490d278fe3c4e90942101a74b2cd0020
SHA1

1590fd87a0ff25e57f05dc1ebea3703edea197fb
SHA256

1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1
SHA512

a9cc92cd58784332a460fb13d389a6a255e4103ecf2b9773bb6278b75f542741fea3d179556ee9553e2e809d2572ad8ead76d3ef61a44a56dfcc798784629e04
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/0:/pdyLALwACPmV3NYaYLiwIt3raA5BRfv

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/1592-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1592-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1592-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1592-60-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe

Executes dropped EXE 3 IoCs

pid	Process
1768	csrsll.exe
1604	csrsll.exe
1592	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-1-5-21-3442511616-637977696-3186306149-1000\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 1204 set thread context of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1768 set thread context of 1604	1768	csrsll.exe	88
PID 1768 set thread context of 1592	1768	csrsll.exe	89

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1204-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/2292-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2292-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2292-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1204-10-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/files/0x000b000000023ba7-27.dat	upx
behavioral2/memory/1768-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1768-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1592-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1592-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2292-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2292-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1592-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1592-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1592-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1768-51-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1604-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1592-60-0x0000000000400000-0x0000000000414000-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	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe
Token: SeDebugPrivilege	1604	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
1768	csrsll.exe
1604	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 1204 wrote to memory of 2292	1204	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	82
PID 2292 wrote to memory of 4036	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	83
PID 2292 wrote to memory of 4036	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	83
PID 2292 wrote to memory of 4036	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	83
PID 4036 wrote to memory of 2364	4036	cmd.exe	86
PID 4036 wrote to memory of 2364	4036	cmd.exe	86
PID 4036 wrote to memory of 2364	4036	cmd.exe	86
PID 2292 wrote to memory of 1768	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	87
PID 2292 wrote to memory of 1768	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	87
PID 2292 wrote to memory of 1768	2292	1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe	87
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1604	1768	csrsll.exe	88
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89
PID 1768 wrote to memory of 1592	1768	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
"C:\Users\Admin\AppData\Local\Temp\1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe
  "C:\Users\Admin\AppData\Local\Temp\1f836787a50e405084578b2eb0be8dbdf7e87ce1689b5ebf43c71aeb9fd813c1.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2292
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QRNMG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4036
  - - 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:2364
- - 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:1768
  - - 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:1604
  - - 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:1592

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\QRNMG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
735d9f9aac386910cb9e77fd4355b492

SHA1
756bc876f95a342b9128b05ee67f9ba4684121f9

SHA256
123e6801b9f76744db3a1faa634434dde0d0570bb862117b710f10be27f35abc

SHA512
ef8f21e9cc15a9fa07a9129b6bf05fb5780ea8ddd27bec2ccbb180d0d62e7d97c5fca7ed5bf6ed042b8dad4e154e1873bbbfec8f34b80c58c0c99e93de7022ed

Download Submit
memory/1204-10-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1204-3-0x0000000002A60000-0x0000000002A61000-memory.dmp

Filesize
4KB

Download
memory/1204-4-0x0000000002A80000-0x0000000002A81000-memory.dmp

Filesize
4KB

Download
memory/1204-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1592-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1592-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1604-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1768-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1768-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1768-51-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2292-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads