modiloader | fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7

General

Target

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
Size

308KB
MD5

612d430151691943f282e50390262814
SHA1

3919b02437dbb581eaefa1a824e60b87985cc776
SHA256

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7
SHA512

b541015351b53107122b9d6113407c12b67ec3a20c65107c8253d6d3c73b20b4047122a32f526a788a08eabd3ed676faa5abbc7ca5311dc3cf4f15218d31eff0
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

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4604-51-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4604-52-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4604-49-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4604-57-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4604-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4604-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4604-49-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4604-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 11 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4840-6-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4840-9-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4840-8-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4604-46-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4604-51-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4604-52-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4604-49-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4840-55-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4604-47-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/760-56-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4604-57-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

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:

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

1016 csrsll.exe
760 csrsll.exe
4604 csrsll.exe

pid	process
1016	csrsll.exe
760	csrsll.exe
4604	csrsll.exe

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4840-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4840-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4840-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4604-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4604-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4604-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4604-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4840-55-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4604-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/760-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4604-57-0x0000000000400000-0x0000000000414000-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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.execsrsll.exe

description	pid	process	target process
PID 4404 set thread context of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 1016 set thread context of 760	1016	csrsll.exe	csrsll.exe
PID 1016 set thread context of 4604	1016	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	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe
Token: SeDebugPrivilege	760	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exefa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.execsrsll.execsrsll.exe

pid	process
4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
1016	csrsll.exe
760	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exefa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.execmd.execsrsll.exe

description	pid	process	target process
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4404 wrote to memory of 4840	4404	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
PID 4840 wrote to memory of 3216	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	cmd.exe
PID 4840 wrote to memory of 3216	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	cmd.exe
PID 4840 wrote to memory of 3216	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	cmd.exe
PID 3216 wrote to memory of 3680	3216	cmd.exe	reg.exe
PID 3216 wrote to memory of 3680	3216	cmd.exe	reg.exe
PID 3216 wrote to memory of 3680	3216	cmd.exe	reg.exe
PID 4840 wrote to memory of 1016	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	csrsll.exe
PID 4840 wrote to memory of 1016	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	csrsll.exe
PID 4840 wrote to memory of 1016	4840	fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 760	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe
PID 1016 wrote to memory of 4604	1016	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
"C:\Users\Admin\AppData\Local\Temp\fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4404

C:\Users\Admin\AppData\Local\Temp\fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe
"C:\Users\Admin\AppData\Local\Temp\fa5c3657371b65c41af6ddb79c2d2f775d983837df3835ef61dda0364ad44fa7.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4840

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AXLMI.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:3216

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:3680

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:1016

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:760

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:4604

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\AXLMI.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

MD5
10e832e13f9d67cc58fb40a585ad505b

SHA1
5a1f159367ff84cda1b8d7ac0d3fb062c3c63794

SHA256
63636f28e3e65c80f931306d8e5889068ce280ad6126c95d1d7c45e25421d2cb

SHA512
409b31b565ee6ebb1cfe35a1cda6943fca609f0150368fe0781b0adf82c8ca8e8e642c62dfac2a0d7e9c95f132ef5e9da6aaf54038904cdcd9553845763339f2

Download Submit
memory/760-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1016-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1016-45-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1016-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4404-3-0x0000000002910000-0x0000000002911000-memory.dmp

Filesize
4KB

Download
memory/4404-5-0x0000000002940000-0x0000000002941000-memory.dmp

Filesize
4KB

Download
memory/4404-4-0x0000000002920000-0x0000000002921000-memory.dmp

Filesize
4KB

Download
memory/4404-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4604-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4840-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-55-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads