modiloader | fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa

Analysis

max time kernel
149s
max time network
150s
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, 10:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2620-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2620-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe

Executes dropped EXE 3 IoCs

pid	Process
544	csrsll.exe
532	csrsll.exe
2620	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-1-5-21-4089630652-1596403869-279772308-1000\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 1888 set thread context of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 544 set thread context of 532	544	csrsll.exe	95
PID 544 set thread context of 2620	544	csrsll.exe	96

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1888-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1888-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2224-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2224-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1888-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2224-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b61-29.dat	upx
behavioral2/memory/544-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2224-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/544-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2620-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/544-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2224-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/532-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2620-62-0x0000000000400000-0x0000000000414000-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	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	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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe
Token: SeDebugPrivilege	532	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe
544	csrsll.exe
532	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 1888 wrote to memory of 2224	1888	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	82
PID 2224 wrote to memory of 4836	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 2224 wrote to memory of 4836	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 2224 wrote to memory of 4836	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	85
PID 4836 wrote to memory of 3420	4836	cmd.exe	88
PID 4836 wrote to memory of 3420	4836	cmd.exe	88
PID 4836 wrote to memory of 3420	4836	cmd.exe	88
PID 2224 wrote to memory of 544	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	89
PID 2224 wrote to memory of 544	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	89
PID 2224 wrote to memory of 544	2224	fdec5525ca085abce3eff98ebc4d70534d90586a36efc11e320c41f789d14aaa.exe	89
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 532	544	csrsll.exe	95
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96
PID 544 wrote to memory of 2620	544	csrsll.exe	96

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:1888
- 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:2224
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NWNBC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4836
  - - 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:3420
- - 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:544
  - - 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:532
  - - 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:2620

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

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3dc9c1d7c4a5bb4c06f4f36d74bec24b

SHA1
79cf6a012a58856e57ec832dea6bbeecdad72b70

SHA256
959785f29d64701e3e0027566b86bb5c2e8c98c0172d43f3d59585e8df13abd3

SHA512
44c7a8f8d3cac4e25648c2e64ea97db268792c5f355919811849840eebaab11d7bfc12876e194c26ed3103f8e34dbb85f97113c74125ec794143c5866fd02a9c

Download Submit
memory/532-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/544-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/544-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/544-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1888-3-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1888-4-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1888-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1888-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/1888-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1888-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2224-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2224-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2224-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2224-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2224-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2224-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2620-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads