modiloader | fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3

General

Target

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
Size

308KB
MD5

4f495d696694e5d074125e7b95180f6c
SHA1

c390cd7665fc9eb63f751179598f324bb79dd32a
SHA256

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3
SHA512

d62e64723321c1af1ebb7bc327fc84578ddf59373204aa8ed22b91533a92b8de949196609137bc48432c4a9f217a3b12123ee72785384196846d0de271f4f252
SSDEEP

3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F

Score

10^/10

modiloader 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 Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5080-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5080-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5080-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5080-56-0x0000000000400000-0x0000000000414000-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:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

4984 csrsll.exe
4352 csrsll.exe
5080 csrsll.exe

pid	process
4984	csrsll.exe
4352	csrsll.exe
5080	csrsll.exe

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4888-4-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4888-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5080-41-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5080-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5080-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5080-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5080-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4888-53-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4352-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5080-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execsrsll.exe

description	pid	process	target process
PID 1632 set thread context of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 4984 set thread context of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 set thread context of 5080	4984	csrsll.exe	csrsll.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe
Token: SeDebugPrivilege	4352	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exefc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execsrsll.execsrsll.exe

pid	process
1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
4984	csrsll.exe
4352	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exefc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execmd.execsrsll.exe

description	pid	process	target process
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 1632 wrote to memory of 4888	1632	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 4888 wrote to memory of 2988	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 4888 wrote to memory of 2988	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 4888 wrote to memory of 2988	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 2988 wrote to memory of 4624	2988	cmd.exe	reg.exe
PID 2988 wrote to memory of 4624	2988	cmd.exe	reg.exe
PID 2988 wrote to memory of 4624	2988	cmd.exe	reg.exe
PID 4888 wrote to memory of 4984	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 4888 wrote to memory of 4984	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 4888 wrote to memory of 4984	4888	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 4352	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe
PID 4984 wrote to memory of 5080	4984	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1632

C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4888

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KAVSR.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2988

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
PID:4624

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4984

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4352

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:5080

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\KAVSR.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Filesize
308KB

MD5
7790d0a7690b1ae87f290ef6531f1d79

SHA1
331a023c77e9e5818182fcf2866a20ba0891abe2

SHA256
3ce22555f131bfb34f20b8157d75d2e38403fdf51110d8fb8ad1b30985adb9ec

SHA512
3eb98455cfa43ca2d39f9aff4648a9fc0c785df604926c2f10a59b1dcc3db42d99edcc765389b3266fb89ce90d3c7c6fa0842d3a34f041a75d8f3d4a5b281d73

Download Submit
memory/1632-3-0x0000000002910000-0x0000000002911000-memory.dmp

Filesize
4KB

Download
memory/1632-8-0x0000000002930000-0x0000000002931000-memory.dmp

Filesize
4KB

Download
memory/1632-7-0x0000000002920000-0x0000000002921000-memory.dmp

Filesize
4KB

Download
memory/1632-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4352-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-53-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-4-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4984-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4984-46-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4984-34-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5080-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5080-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5080-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5080-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5080-41-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5080-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads