46a02f40d40f489595b871deca5b5dd2252b79bc6588d9b14a0855fe1f126c24

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 23:49

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General

Target
4456e71131dba29c08861d628761084f.exe
Size 123KB
Sample231225-3vg5vaaafl
SHA256 46a02f40d40f489595b871deca5b5dd2252b79bc6588d9b14a0855fe1f126c24
MD5 4456e71131dba29c08861d628761084f
SHA1 95a26fa133bf0795e425b0ab7aa0b6fec1673a54
SHA512 f5b5b2cd1d6b4a7831aa1333d892d1edf6fe053d0716d08a3988ec6e5bd0480f14e0c552037c435f63f01cd3723dc234c3766122258732278d3c655dcfd298a8
SSDEEP 3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLvvV:OVYrJrOSsRwcpxt
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

upx

Malware Config

Signatures

Manipulates Digital Signatures 1 TTPs 1 IoCs

Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\SystemCertificates\TrustedPublisher\Certificates\62119EF862C6B3A0D853419B87EB3E2F6C78640A\Blob = 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	regedit.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000023214-27.dat	acprotect

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	iaccess32.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	iaccess32.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	regsvr32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1616-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4344-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1616-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000b000000023151-4.dat	upx
behavioral2/files/0x0006000000023214-27.dat	upx
behavioral2/memory/4344-57-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\egaccess4_1071.dll	iaccess32.exe

Drops file in Program Files directory 13 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e_1_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e_go_3.gif	iaccess32.exe
File opened for modification	C:\Program Files (x86)\Instant Access\Multi\20100713130701\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\Common\module.php	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e_3_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\instant access.exe	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk	iaccess32.exe
File opened for modification	C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e.ico	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e_2_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100713130701\medias\p2e_logo_2.gif	iaccess32.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\iaccess32.exe	4456e71131dba29c08861d628761084f.exe
File created	C:\Windows\tmlpcert2007	iaccess32.exe
File created	C:\Windows\dialexe.zl	iaccess32.exe
File created	C:\Windows\dialexe.epk	iaccess32.exe
File created	C:\Windows\dialerexe.ini	iaccess32.exe
File created	C:\Windows\egdhtm_pack.epk	iaccess32.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iaccess32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iaccess32.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\IESettingSync	iaccess32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	iaccess32.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\À	iaccess32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32\ = "C:\\Windows\\SysWow64\\egaccess4_1071.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe

Runs regedit.exe 1 IoCs

pid	Process
1672	regedit.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1616	4456e71131dba29c08861d628761084f.exe
4344	iaccess32.exe
4344	iaccess32.exe
4344	iaccess32.exe
4344	iaccess32.exe
4344	iaccess32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1616 wrote to memory of 4344	1616	4456e71131dba29c08861d628761084f.exe	89
PID 1616 wrote to memory of 4344	1616	4456e71131dba29c08861d628761084f.exe	89
PID 1616 wrote to memory of 4344	1616	4456e71131dba29c08861d628761084f.exe	89
PID 4344 wrote to memory of 1672	4344	iaccess32.exe	90
PID 4344 wrote to memory of 1672	4344	iaccess32.exe	90
PID 4344 wrote to memory of 1672	4344	iaccess32.exe	90
PID 4344 wrote to memory of 1984	4344	iaccess32.exe	92
PID 4344 wrote to memory of 1984	4344	iaccess32.exe	92
PID 4344 wrote to memory of 1984	4344	iaccess32.exe	92

C:\Users\Admin\AppData\Local\Temp\4456e71131dba29c08861d628761084f.exe
"C:\Users\Admin\AppData\Local\Temp\4456e71131dba29c08861d628761084f.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Windows\iaccess32.exe
  C:\Windows\iaccess32.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies Internet Explorer settings
  - Modifies data under HKEY_USERS
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4344
- - C:\Windows\SysWOW64\regedit.exe
    "C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
    3⤵
    - Manipulates Digital Signatures
    - Runs regedit.exe
    PID:1672
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
    3⤵
    - Loads dropped DLL
    - Modifies registry class
    PID:1984

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

dialerexe.ini

Path C:\Program Files (x86)\Instant Access\Multi\20100713130701\dialerexe.ini
Size 587B
SHA256 4887e74c925ecb111ec154ba3b1b5620e9e17bdb13d9c74627e31eecfa2caaf6
MD5 699b3f7be60df194b803de7781341844
SHA1 9d86d4b32ece41982ec87bccaf383fee986ac02f
SHA512 f2e3500e4804b48ed3b3fc66eba2e1f8469c7e4080e3c85497dcd0c6bd34ff98ec8d337b28d057cb2e74d2136662d4f1ac292cd96a0ba4dd7d96e4b8a1c2ab2a
MD5 SHA1 SHA512

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NOCREDITCARD.lnk

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\NOCREDITCARD.lnk
Size 2KB
SHA256 63da77c39cc07168e043ba0518081ab26e4edf6897136ae7fdc21f61790cd7fa
MD5 db2e3c9aa1357e749b89a3d675bb8a8d
SHA1 352dc24ae88854fd5671b0c56a7255161a039590
SHA512 2c9f88aade1c630280d9fa86e99c4c59583f2abab5c75852160553988baea6c7eeb49a5307fc1ea01c7308aeb15ba7bd2de93ca2d07af5c0cf047962101895ad
MD5 SHA1 SHA512

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NOCREDITCARD.lnk

Path C:\Users\Public\Desktop\NOCREDITCARD.lnk
Size 2KB
SHA256 1c6311bc65f95e4eba62493840c45e1e17cbd78e469ca64a0bf1d9360389980e
MD5 05ed2e315deee89b718d01d541432b15
SHA1 56507fbc92480b4db198103f8ffd73842c8d73ba
SHA512 728fa05fe9887301f61aea5ab6850bb64be21b33e0468d6ebeff5123cd83aa70e6d375393349b76ea5e8139bfd97a5a43d6e6befe556a56d6d76651cedc40990
MD5 SHA1 SHA512

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egaccess4_1071.dll

Path C:\Windows\SysWOW64\egaccess4_1071.dll
Size 76KB
SHA256 f601991aa00cbe7001197affc0e3854ab76c51c05b9a6ca3e3f708fed876c32f
MD5 b83f652ffa76451ae438954f89c02f62
SHA1 b3ba0014dd16cee5f6d4cfe7e28b2d5de79dc6dd
SHA512 965172a5ecd070ea6707ec9985ee3c135c06534561b90ae233e8049b247d87d529b8280f0faf2b0ed933f59c68844414726fa80c4d3119cffa4fdd1cb60eab83
SSDEEP 1536:Hn/ctpn5sgsEMbUie/sqalYuhzm4Jf1O8hRQVVTuPcNuSa85yXUct7piq:Hnk9sX1qalYuhLJNdjQVVTuP5J85Vi9F
MD5 SHA1 SHA512 SSDEEP

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iaccess32.exe

Path C:\Windows\iaccess32.exe
Size 123KB
SHA256 5e5447fc17dcc479718e95a6d1a3a4c6e10a5268762d47488a8bb1f696353987
MD5 d057a82254b0262caade7f05aca3acc2
SHA1 262f41b3c9b240c857c601a8127fe25958b45994
SHA512 3f93da8d3bbf5878e77bda158debe1827404b5facc6b74d381718037723df1e50492c7b8ad24bdb5dac8a6bff8bf84eca977aaefdeafa14eb1026cd94282be00
SSDEEP 3072:ueSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLvvV:uVYrJrOSsRwcpxt
MD5 SHA1 SHA512 SSDEEP

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tmlpcert2007

Path C:\Windows\tmlpcert2007
Size 6KB
SHA256 eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48
MD5 b103757bc3c714123b5efa26ff96a915
SHA1 991d6694c71736b59b9486339be44ae5e2b66fef
SHA512 d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1
SSDEEP 96:NKKrAuYrNa7vSePKH4W0wMK6RdWnhW0g0sOxFZ91MaQl4MwEwuN3CoW0yAypDE2v:d0uYRdePKVR6CcBK5MaQlTwYN32D7/UK
MD5 SHA1 SHA512 SSDEEP

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memory/1616-0-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/1616-5-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4344-6-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4344-57-0x0000000000400000-0x000000000042E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads