28c9cba99faa53a6ca0a45bf2802c1859971edc7100669c07417878660c2bdd2

General

Target

43ec28d5d173c35116d6f99fb46796ef.exe
Size

123KB
MD5

43ec28d5d173c35116d6f99fb46796ef
SHA1

8453cc16df15b761d1ea45242f0c0c2410a52518
SHA256

28c9cba99faa53a6ca0a45bf2802c1859971edc7100669c07417878660c2bdd2
SHA512

fe2c3540b35c10f2cbb3ef740af73ac01f7e55e7815621214a9998b40eeb39e2798a98bad94cbda42559f87bd95481aba10c3c25fc16ef62014f07b365ed1acd
SSDEEP

3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLXJmY:OVYrJrOSsRwcpBJmY

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-1-5-21-3803511929-1339359695-2191195476-1000\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/0x000600000002326f-26.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	iaccess32.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	iaccess32.exe

Loads dropped DLL 1 IoCs

pid	Process
4640	regsvr32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3140-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000600000001e5df-3.dat	upx
behavioral2/memory/3140-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4932-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000600000002326f-26.dat	upx
behavioral2/memory/4932-58-0x0000000000400000-0x000000000042E000-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\20100716000710\medias\p2e_1_3.gif	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\20100716000710\instant access.exe	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\medias\p2e_logo_2.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\medias\p2e.ico	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\medias\p2e_2_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\medias\p2e_go_3.gif	iaccess32.exe
File opened for modification	C:\Program Files (x86)\Instant Access\Multi\20100716000710\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\Common\module.php	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100716000710\medias\p2e_3_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk	iaccess32.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
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
File created	C:\Windows\iaccess32.exe	43ec28d5d173c35116d6f99fb46796ef.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-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\IESettingSync	iaccess32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	iaccess32.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iaccess32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	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
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
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

Runs regedit.exe 1 IoCs

pid	Process
3480	regedit.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3140	43ec28d5d173c35116d6f99fb46796ef.exe
4932	iaccess32.exe
4932	iaccess32.exe
4932	iaccess32.exe
4932	iaccess32.exe
4932	iaccess32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 4932	3140	43ec28d5d173c35116d6f99fb46796ef.exe	91
PID 3140 wrote to memory of 4932	3140	43ec28d5d173c35116d6f99fb46796ef.exe	91
PID 3140 wrote to memory of 4932	3140	43ec28d5d173c35116d6f99fb46796ef.exe	91
PID 4932 wrote to memory of 3480	4932	iaccess32.exe	94
PID 4932 wrote to memory of 3480	4932	iaccess32.exe	94
PID 4932 wrote to memory of 3480	4932	iaccess32.exe	94
PID 4932 wrote to memory of 4640	4932	iaccess32.exe	95
PID 4932 wrote to memory of 4640	4932	iaccess32.exe	95
PID 4932 wrote to memory of 4640	4932	iaccess32.exe	95

C:\Users\Admin\AppData\Local\Temp\43ec28d5d173c35116d6f99fb46796ef.exe
"C:\Users\Admin\AppData\Local\Temp\43ec28d5d173c35116d6f99fb46796ef.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3140
- 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:4932
- - C:\Windows\SysWOW64\regedit.exe
    "C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
    3⤵
    - Manipulates Digital Signatures
    - Runs regedit.exe
    PID:3480
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
    3⤵
    - Loads dropped DLL
    - Modifies registry class
    PID:4640

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:4908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

SIP and Trust Provider Hijacking

1

T1553.003

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk

Filesize
2KB

MD5
f4c92ee630bfd93c412c3c78cf4be4e8

SHA1
f60250dcad5f79c9f69da9625bb2eec6529f0f21

SHA256
5c07d51f1cf138cec6ecda85da81725f3d0f51cab7ce44027d2446f55054192f

SHA512
d1c9d39cfc5b80d63737fee63dab40d5e754fb7e7ea371e43faa5125a78634ceeabe1d29bf05e41ae42f48c3d12374b4f23ea12c8c7701c9a11599dffb9a4cff

Download Submit
C:\Windows\SysWOW64\egaccess4_1071.dll

Filesize
76KB

MD5
b83f652ffa76451ae438954f89c02f62

SHA1
b3ba0014dd16cee5f6d4cfe7e28b2d5de79dc6dd

SHA256
f601991aa00cbe7001197affc0e3854ab76c51c05b9a6ca3e3f708fed876c32f

SHA512
965172a5ecd070ea6707ec9985ee3c135c06534561b90ae233e8049b247d87d529b8280f0faf2b0ed933f59c68844414726fa80c4d3119cffa4fdd1cb60eab83

Download Submit
C:\Windows\dialerexe.ini

Filesize
587B

MD5
2703a2116c23a9031b2d81ad06770a25

SHA1
95f3120c67b78cce81f305f77cda0016c350e669

SHA256
c3175538663e2618f17dac0ea3e4990b3aec1a09bb29b90b74adf6c073dd1187

SHA512
6511049e659d6dc49659fd31b7a03a42ca6481d01d8b42814af7afd8a3571712c832144ffa4cf1fa0151727146b816835d36092c88598b779ac3f41159d631e5

Download Submit
C:\Windows\iaccess32.exe

Filesize
123KB

MD5
8a538aaf27d31088b312835207b7b4ed

SHA1
bb08f11553e21eee8a9b5274a1d895154c2fd0bd

SHA256
4eb636c80b32b87fedfe8285aab2e3affd965e0d1500b44fee457dec2df9670f

SHA512
5a9a6c3aecd04248d163304230c148f281402e088744767bfd35a09275146b37b352ef4209a135c98be466f757b56c89f215bcc7e894d7532fbd0743adf931ea

Download Submit
C:\Windows\tmlpcert2007

Filesize
6KB

MD5
b103757bc3c714123b5efa26ff96a915

SHA1
991d6694c71736b59b9486339be44ae5e2b66fef

SHA256
eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48

SHA512
d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1

Download Submit
memory/3140-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3140-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4640-28-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/4640-60-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/4932-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4932-58-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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