54b302a4294b3517d482220dc6a175fea8e27f5063b299397d202236adf857a1

General

Target

3586772961b721bcdb5bf8a1104f8239.exe
Size

123KB
MD5

3586772961b721bcdb5bf8a1104f8239
SHA1

dcc3dd7e65869df585fc5080384197519c35a5e0
SHA256

54b302a4294b3517d482220dc6a175fea8e27f5063b299397d202236adf857a1
SHA512

a5133b3aba1fbaa72dc2182f071b32bc07748ec815ba2fbca0e53e154945b78ff6e2e9d18aae31af38c94fad07d48959917bdaa0017e3a5c598b99a3ea36dfbc
SSDEEP

3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLfr3:OVYrJrOSsRwcpZr3

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-1-5-21-3791175113-1062217823-1177695025-1000\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/0x0006000000023246-27.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	iaccess32.exe

Executes dropped EXE 1 IoCs

pid	Process
2996	iaccess32.exe

Loads dropped DLL 1 IoCs

pid	Process
3456	regsvr32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1112-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000200000001fafe-3.dat	upx
behavioral2/memory/1112-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2996-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0006000000023246-27.dat	upx
behavioral2/memory/2996-55-0x0000000000400000-0x000000000042E000-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\20100715210710\medias\p2e_1_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\medias\p2e.ico	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\Multi\20100715210710\dialerexe.ini	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\20100715210710\medias\p2e_logo_2.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\DesktopIcons\NOCREDITCARD.lnk	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\medias\p2e_3_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\instant access.exe	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\Common\module.php	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\medias\p2e_2_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100715210710\medias\p2e_go_3.gif	iaccess32.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\dialerexe.ini	iaccess32.exe
File created	C:\Windows\egdhtm_pack.epk	iaccess32.exe
File created	C:\Windows\iaccess32.exe	3586772961b721bcdb5bf8a1104f8239.exe
File created	C:\Windows\tmlpcert2007	iaccess32.exe
File created	C:\Windows\dialexe.zl	iaccess32.exe
File created	C:\Windows\dialexe.epk	iaccess32.exe

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

System Information Discovery
T1082

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
884	regedit.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1112	3586772961b721bcdb5bf8a1104f8239.exe
2996	iaccess32.exe
2996	iaccess32.exe
2996	iaccess32.exe
2996	iaccess32.exe
2996	iaccess32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 2996	1112	3586772961b721bcdb5bf8a1104f8239.exe	89
PID 1112 wrote to memory of 2996	1112	3586772961b721bcdb5bf8a1104f8239.exe	89
PID 1112 wrote to memory of 2996	1112	3586772961b721bcdb5bf8a1104f8239.exe	89
PID 2996 wrote to memory of 884	2996	iaccess32.exe	95
PID 2996 wrote to memory of 884	2996	iaccess32.exe	95
PID 2996 wrote to memory of 884	2996	iaccess32.exe	95
PID 2996 wrote to memory of 3456	2996	iaccess32.exe	94
PID 2996 wrote to memory of 3456	2996	iaccess32.exe	94
PID 2996 wrote to memory of 3456	2996	iaccess32.exe	94

C:\Users\Admin\AppData\Local\Temp\3586772961b721bcdb5bf8a1104f8239.exe
"C:\Users\Admin\AppData\Local\Temp\3586772961b721bcdb5bf8a1104f8239.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1112
- 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 data under HKEY_USERS
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
    3⤵
    - Loads dropped DLL
    - Modifies registry class
    PID:3456
- - C:\Windows\SysWOW64\regedit.exe
    "C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
    3⤵
    - Manipulates Digital Signatures
    - Runs regedit.exe
    PID:884

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:1788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
1bad07b44ab764f9ebdaaf64bbbfcce2

SHA1
0edbf6dbdf38da2fe04547197ae3b98347061e1f

SHA256
1db7bfba8ba7a032be79e4a7948311e8d7a940f822d16ba8fdc35037f90e0153

SHA512
87994e6a0b76f7ee872d90ecea30bb37b0ea617f70281361a5721e4da4fc9f2bb2a6305e43a2332feb6a9eb849af9ac74ea09dbd285f4b0d8f05c8e12b771cfa

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
b8ca7c6acd7ca2f7c04345dcb9742cec

SHA1
af824740dbbbcb324155bfde16da998c7481e643

SHA256
70e88da6d4cff8ff2453d825880b7f1adcdd92b788147397733d635d652efbb5

SHA512
40c6d215b32f3518c970c12b0dc9ca50e17fa118557565a2d63aabbe75c24e74db8dc2b6797f1d388ff27d7d6bc4f95ae6e5f81866f6a3773b378cfcdd65a75c

Download Submit
C:\Windows\iaccess32.exe

Filesize
123KB

MD5
cad75df4fb22bca54ba4c120ead23469

SHA1
01340fa9a1f9a589b121aa962b74b4689bc5b295

SHA256
ed72ede4eb214c55d77cc694df050bdf923dda179a1eb95811677fa5f612e6ef

SHA512
51dcb58c26703271920dc7b7d63ccf58dbece1015adf30de63c9f4bf6cd12955c793440e2aa8bbe36c4344ee3b95fb181107472e9f307ec267c2fa4063ecc63d

Download Submit
C:\Windows\tmlpcert2007

Filesize
6KB

MD5
b103757bc3c714123b5efa26ff96a915

SHA1
991d6694c71736b59b9486339be44ae5e2b66fef

SHA256
eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48

SHA512
d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1

Download Submit
memory/1112-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1112-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2996-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2996-55-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing