50dd0b8abea5688d7633b40d5722909535101cf816bff9b77a65cbb0764ac80d

General

Target

dfb302bfe2528e489185cc87b2227de3.exe
Size

123KB
MD5

dfb302bfe2528e489185cc87b2227de3
SHA1

ff7233ad153e909de680ba4ee447f79b440257db
SHA256

50dd0b8abea5688d7633b40d5722909535101cf816bff9b77a65cbb0764ac80d
SHA512

de75d925831a1fff402d1a60342e9126971ad2adb15ff7dcd2d75a82fc6bf4dd060d7e8210de59873fa71e78e9a69c19a231d789c4f41e157fa0c8242e51edf3
SSDEEP

3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLtK:OVYrJrOSsRwcpLK

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-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\SystemCertificates\TrustedPublisher\Certificates\62119EF862C6B3A0D853419B87EB3E2F6C78640A\Blob = 03000000010000001400000062119ef862c6b3a0d853419b87eb3e2f6c78640a2000000001000000df030000308203db30820344a00302010202033fc398300d06092a864886f70d01010405003055310b3009060355040613025a4131253023060355040a131c54686177746520436f6e73756c74696e67202850747929204c74642e311f301d0603550403131654686177746520436f6465205369676e696e67204341301e170d3035303831353031353134345a170d3037303931363133323531325a30818b310b3009060355040613024652310e300c0603550408130552686f6e65310d300b060355040713044c796f6e31193017060355040a1310656c656374726f6e69632d67726f757031273025060355040b131e536563757265204170706c69636174696f6e20446576656c6f706d656e743119301706035504031310656c656374726f6e69632d67726f757030820122300d06092a864886f70d01010105000382010f003082010a0282010100e2754d8a4e6d4db6e025b0073520ddd7eeec116a813940fda2c4c66f7a354adb3036188d4078f8891b3fe15d467dfba5e17984cac2b246c27c052e63956dfe817eb423b9615bddfddaadac5e2ac0f41f583edd24d7830f5875df2937a9152b741eef3950e5116e76d2e7e3ffdf6fcb5858af26f5e2effd019a1f82b98d7f21ed089d5bb8553cd89c823becaeb62ea1cc4b455cb4e93e8ac715320f31dc3fbc2d0be0d65c608c58c19ff06da7bc1ec48a45ef0219eef40294504e2663b1c9dad6a2241df996c59cf110b706285fbaeae0c55d776573536218c3c7ae248b82cae01513cd8b2828a94f4a70ba6e199919a0f5eae20643feaabebe2ba3b2819e92790203010001a381fd3081fa301f0603551d250418301606082b06010505070303060a2b060104018237020116301106096086480186f8420101040403020410301d0603551d0404163014300e300c060a2b0601040182370201160302078030230603551d11041c301a82187777772e656c656374726f6e69632d67726f75702e636f6d303e0603551d1f043730353033a031a02f862d687474703a2f2f63726c2e7468617774652e636f6d2f546861777465436f64655369676e696e6743412e63726c303206082b0601050507010104263024302206082b060105050730018616687474703a2f2f6f6373702e7468617774652e636f6d300c0603551d130101ff04023000300d06092a864886f70d01010405000381810075160a692f4bc2096bce67c58b0d88320552104e4d35f5018bc2ab1be03ecae3c0abe7db45629b1b3c1812039145c15d6f2774c211a2c86f93a819573d58a3c0e66d1e19e84638800e3372880b4e9cdcf70cc769bdeff236ed3ac6f20e370122fa791e71b0ea8be78077ffc288c382b201d78ea8bbf9e9457fad4ee80273279c	regedit.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000700000002321f-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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	iaccess32.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	iaccess32.exe

Loads dropped DLL 1 IoCs

pid	Process
4876	regsvr32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3544-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x00050000000224ff-3.dat	upx
behavioral2/memory/3544-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4620-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000700000002321f-26.dat	upx
behavioral2/memory/4620-58-0x0000000000400000-0x000000000042E000-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\20100709210709\dialerexe.ini	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\instant access.exe	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Center\NOCREDITCARD.lnk	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\Common\module.php	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e.ico	iaccess32.exe
File opened for modification	C:\Program Files (x86)\Instant Access\Multi\20100709210709\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\20100709210709\medias\p2e_1_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_go_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_3_3.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_logo_2.gif	iaccess32.exe
File created	C:\Program Files (x86)\Instant Access\Multi\20100709210709\medias\p2e_2_3.gif	iaccess32.exe
File opened for modification	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\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	dfb302bfe2528e489185cc87b2227de3.exe
File created	C:\Windows\tmlpcert2007	iaccess32.exe
File created	C:\Windows\dialexe.zl	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
Set value (int)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	iaccess32.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iaccess32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iaccess32.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Software\Microsoft\Internet Explorer\IESettingSync	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}\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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{413E282B-C32A-4717-A0F3-4F2E6FE25F83}	regsvr32.exe

Runs regedit.exe 1 IoCs

pid	Process
1476	regedit.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3544	dfb302bfe2528e489185cc87b2227de3.exe
4620	iaccess32.exe
4620	iaccess32.exe
4620	iaccess32.exe
4620	iaccess32.exe
4620	iaccess32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3544 wrote to memory of 4620	3544	dfb302bfe2528e489185cc87b2227de3.exe	88
PID 3544 wrote to memory of 4620	3544	dfb302bfe2528e489185cc87b2227de3.exe	88
PID 3544 wrote to memory of 4620	3544	dfb302bfe2528e489185cc87b2227de3.exe	88
PID 4620 wrote to memory of 1476	4620	iaccess32.exe	91
PID 4620 wrote to memory of 1476	4620	iaccess32.exe	91
PID 4620 wrote to memory of 1476	4620	iaccess32.exe	91
PID 4620 wrote to memory of 4876	4620	iaccess32.exe	92
PID 4620 wrote to memory of 4876	4620	iaccess32.exe	92
PID 4620 wrote to memory of 4876	4620	iaccess32.exe	92

C:\Users\Admin\AppData\Local\Temp\dfb302bfe2528e489185cc87b2227de3.exe
"C:\Users\Admin\AppData\Local\Temp\dfb302bfe2528e489185cc87b2227de3.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3544
- 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:4620
- - C:\Windows\SysWOW64\regedit.exe
    "C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
    3⤵
    - Manipulates Digital Signatures
    - Runs regedit.exe
    PID:1476
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
    3⤵
    - Loads dropped DLL
    - Modifies registry class
    PID:4876

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:4928

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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\NOCREDITCARD.lnk

Filesize
2KB

MD5
237ae9e26545d0a7f130cc7c756fe82d

SHA1
5548197cbe4ae6d9056230e4a59dd916c026bb1f

SHA256
eb6bce9c84a926f5f4881a581eb7fc2568b8e183ea5cc85e808c8f9324a6c5e1

SHA512
b3438292945836878e7feefcaf8b423f83dd7d4172e09e53fa7a86308112679ed105c04e0a90100ae33c0a69ccbfdbf05d0323cf629c7304b30929ba4aceae61

Download Submit
C:\Users\Public\Desktop\NOCREDITCARD.lnk

Filesize
2KB

MD5
c3746d5e60dd9c93e833a2a234ac2b75

SHA1
6899e680929e7b0a8d2bc591b184f19b390be0c9

SHA256
3786d48bbafedef6c31d23c229f05352a801ce253c6a99b74e47b0534a333a26

SHA512
ed480ee779a5116549c892bffa465ac55ff0e463e41833aff85340b84c5326c3c9360d0a51f27de647e822938aad0f7362b13d4bfc540f7d61daed5732d82d70

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
92fc8e9fba327cdca54390ada5742ec8

SHA1
18e2dce596c32419e094c67ec4279a2b98d8fc69

SHA256
2cc87510c8b99bc6ee815b8e721c99503b813e8976eab53f48160f7c04664d2a

SHA512
ce193bfa8102bc8f695edf7053799c2f1acca1f16658d9c91cacf7622e1041ea9f7ecf51abdbc0a4e36ee96e04edd96081d5cc0efda5a2070a3c806e7094eb2b

Download Submit
C:\Windows\iaccess32.exe

Filesize
123KB

MD5
e4ac874839b0cd83022fff3a714fa645

SHA1
324c680fb411734e1a059007f509134057dbfcdc

SHA256
cdd1ff98f0c6a12bf8cec67b59443fdb90f1f93e0ffc271888b663c1f62cc844

SHA512
87901dce853e5807f1197f369d0eb35e8248ee05f547ef9db9b48469491e3463f0c6707e5f9d1cf9680494faf7741cfd295a9922da0d497e6aebe057d2a98892

Download Submit
C:\Windows\tmlpcert2007

Filesize
6KB

MD5
b103757bc3c714123b5efa26ff96a915

SHA1
991d6694c71736b59b9486339be44ae5e2b66fef

SHA256
eef8937445f24c2bcbe101419be42694e0e38628653a755ab29ecba357d81d48

SHA512
d04f2ab14ad4d3e06ea357b4c810515d73b32f2650533a5895ebf5d14b4b697752f25c0c371372e00faab661c0b051c33b8c25bf1226f30be5d6b8727dea81e1

Download Submit
memory/3544-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3544-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4620-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4620-58-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4876-28-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download

Analysis

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