modiloader | 36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0af

General

Target

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
Size

338KB
MD5

f391e26274dc781ed0da826493ecb750
SHA1

ad8e59105f9737c5e7c241e0ea322fe2b09eca04
SHA256

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0af
SHA512

957a952ce39e501f214c2837d70d8f1607f517a84364bd73819d21381c826a9d336f44f187269f43f086ea479fb6c18eb297e7c62646895b55a0ef076d62e6d3
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/4036-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4036-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4036-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4036-60-0x0000000000400000-0x0000000000414000-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

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

2932 csrsll.exe
3312 csrsll.exe
4036 csrsll.exe

pid	process
2932	csrsll.exe
3312	csrsll.exe
4036	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execsrsll.exe

description	pid	process	target process
PID 2884 set thread context of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2932 set thread context of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 set thread context of 4036	2932	csrsll.exe	csrsll.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2884-0-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/1096-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1096-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1096-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2884-10-0x0000000000400000-0x0000000000457000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/2932-34-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/2932-38-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/2932-39-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/1096-48-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4036-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4036-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4036-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1096-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2932-54-0x0000000000400000-0x0000000000457000-memory.dmp	upx
behavioral2/memory/4036-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4036-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3312-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4036-60-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execmd.exereg.execsrsll.execsrsll.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe
Token: SeDebugPrivilege	3312	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execsrsll.execsrsll.exe

pid	process
2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
2932	csrsll.exe
3312	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.execmd.execsrsll.exe

description	pid	process	target process
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 2884 wrote to memory of 1096	2884	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
PID 1096 wrote to memory of 4164	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 1096 wrote to memory of 4164	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 1096 wrote to memory of 4164	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	cmd.exe
PID 4164 wrote to memory of 3884	4164	cmd.exe	reg.exe
PID 4164 wrote to memory of 3884	4164	cmd.exe	reg.exe
PID 4164 wrote to memory of 3884	4164	cmd.exe	reg.exe
PID 1096 wrote to memory of 2932	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 1096 wrote to memory of 2932	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 1096 wrote to memory of 2932	1096	36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 3312	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe
PID 2932 wrote to memory of 4036	2932	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
"C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe
  "C:\Users\Admin\AppData\Local\Temp\36a7481c5f7e8112829a9333e3c257b6f84bedb103fb96eb9cd5166bd6f6d0afN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1096
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WVHPG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4164
  - - 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:3884
- - 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:2932
  - - 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:3312
  - - 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:4036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WVHPG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
338KB

MD5
06b08b58b77b878d0e3cfbfa0259599c

SHA1
79812891b9a1b8f640617171fde7ca652cd54ed3

SHA256
90aa2e75e4e084c2658ac1a75eb252bb4fa80b12b233f765e2d94462163c686a

SHA512
6fe29f416a3a92dfa9ca60b2f11a55b57d83b9f877199e0777d5604b23f2b868ba371d257885af31548603f1563b3149ef4d611ce4778460163302df5abaaa9f

Download Submit
memory/1096-48-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1096-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1096-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1096-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1096-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2884-3-0x0000000002B70000-0x0000000002B71000-memory.dmp

Filesize
4KB

Download
memory/2884-4-0x0000000002B90000-0x0000000002B91000-memory.dmp

Filesize
4KB

Download
memory/2884-10-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2884-0-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2932-38-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2932-39-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2932-34-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2932-54-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3312-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4036-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4036-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads