5f34fd718a4b541a4f78a7d976bb632b81c4a1d9773d314b2b2c582a9262c6a1

Analysis

max time kernel
113s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 13:45

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General

Target

1a70e2590fb51ebf7a93de53c1b37696.exe
Size

678KB
MD5

1a70e2590fb51ebf7a93de53c1b37696
SHA1

97ad6860079bee3a7d46d045dfa6c1476d4ff930
SHA256

5f34fd718a4b541a4f78a7d976bb632b81c4a1d9773d314b2b2c582a9262c6a1
SHA512

51e58ead8ef5453572a053827ebe570a3b8b386fc9cff7a955f78e934c2f20b0ec818a1cbc84bea9ae8f24883b6929e1a624ac90f95803e5b7289aa6eb48c9ca
SSDEEP

12288:Ovu8qysq7sLw73oBUpPPZgmMlPb9enMai4/La5LFP8pnq+B0LjEoGV59zkAsCJ:OvuZfq7sLwjoBy5BM3enMaEZP8pq+q4r

Score

7^/10

upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023153-4.dat	acprotect
behavioral2/files/0x000c000000023153-19.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
3948	Zcznevrss.exe

Loads dropped DLL 6 IoCs

pid	Process
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023153-4.dat	upx
behavioral2/memory/4376-5-0x0000000010000000-0x0000000010129000-memory.dmp	upx
behavioral2/files/0x000c000000023153-19.dat	upx
behavioral2/memory/3948-21-0x0000000010000000-0x0000000010129000-memory.dmp	upx
behavioral2/memory/4376-37-0x0000000010000000-0x0000000010129000-memory.dmp	upx
behavioral2/memory/3948-47-0x0000000010000000-0x0000000010129000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Zcznevrss.dll	Zcznevrss.exe
File opened for modification	C:\Program Files (x86)\Zcznevrss.dll	Zcznevrss.exe
File created	C:\Program Files (x86)\Zcznevrss.exe	1a70e2590fb51ebf7a93de53c1b37696.exe
File opened for modification	C:\Program Files (x86)\Zcznevrss.exe	1a70e2590fb51ebf7a93de53c1b37696.exe

Modifies Internet Explorer Automatic Crash Recovery 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AutoRecover = "2"	Zcznevrss.exe

Modifies Internet Explorer settings 1 TTPs 34 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	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3347067150"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31079498"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3407067337"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AutoRecover = "2"	Zcznevrss.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F1ECA068-A83D-11EE-9ECD-52EF8B93895E} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079498"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "NO"	Zcznevrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3407067337"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410834425"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3347067150"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079498"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31079498"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2644	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
4376	1a70e2590fb51ebf7a93de53c1b37696.exe
3948	Zcznevrss.exe
3948	Zcznevrss.exe
2644	IEXPLORE.EXE
2644	IEXPLORE.EXE
3940	IEXPLORE.EXE
3940	IEXPLORE.EXE
3940	IEXPLORE.EXE
3940	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 3948	4376	1a70e2590fb51ebf7a93de53c1b37696.exe	90
PID 4376 wrote to memory of 3948	4376	1a70e2590fb51ebf7a93de53c1b37696.exe	90
PID 4376 wrote to memory of 3948	4376	1a70e2590fb51ebf7a93de53c1b37696.exe	90
PID 3948 wrote to memory of 2644	3948	Zcznevrss.exe	92
PID 3948 wrote to memory of 2644	3948	Zcznevrss.exe	92
PID 2644 wrote to memory of 3940	2644	IEXPLORE.EXE	93
PID 2644 wrote to memory of 3940	2644	IEXPLORE.EXE	93
PID 2644 wrote to memory of 3940	2644	IEXPLORE.EXE	93
PID 3948 wrote to memory of 2644	3948	Zcznevrss.exe	92

C:\Users\Admin\AppData\Local\Temp\1a70e2590fb51ebf7a93de53c1b37696.exe
"C:\Users\Admin\AppData\Local\Temp\1a70e2590fb51ebf7a93de53c1b37696.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Program Files (x86)\Zcznevrss.exe
  "C:\Program Files (x86)\Zcznevrss.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Modifies Internet Explorer Automatic Crash Recovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Program Files\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2644
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2644 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:3940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Zcznevrss.exe

Filesize
99KB

MD5
3262311cb739c4b8aa101fa145a6df09

SHA1
6853605a1d1d279dba6d8a87b1ab543e49c59207

SHA256
06b9418b3e97e4f640f94b24dbc34f2775e787d0858842aec2e379e66fe7dac3

SHA512
60704f5e72ba13a516a712790e6743b0ba3381873d7c589828dd3c0d60ce28a4b41535f6e4d21257c4e2d2d94db0696264f6030cbc5f9a32a202b007bfc1f865

Download Submit
C:\Program Files (x86)\Zcznevrss.exe

Filesize
93KB

MD5
7469a99aec5f3ae1c084c77463e44d43

SHA1
d840e81785c6e45461474bbff1fdee894df7156f

SHA256
bd93cf800d784650ee6e2affa5cf5f1015f7de1ec31d801830348aed02f9ad0b

SHA512
6e8ead025e507233489acdceeee2c3e0ffb9f6fd57c98428129c08b865839efaf44c2452aa06af8de02a284525ea8fe9ae8629f7abe3a5edc425f702cf6f34f1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verDE79.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ISEWAASI\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\Exmlrpc.fne

Filesize
72KB

MD5
f79ee77a4f30401507e6f54a61598f58

SHA1
7f3ef4945f621ed2880ff5a10a126957b2011a17

SHA256
cf8e29720823eb114fbc3018569a7296ed3e6fcd6c4897f50c5c6e0e98d0b3f8

SHA512
26ccde784b06c46f60fb5a105c806c4d9dc1497fd79d39728fbcfa869d470ca2ba018b0665f3cbc05019fb0766dac2eb1084a6fdce2f9aaaae881beb09dd3739

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\dp1.fne

Filesize
93KB

MD5
08f0dedbdb0eb7642ab64dc5f0cf2174

SHA1
602b24e4f171d4d87dbed2e266cd6d1d9fece1da

SHA256
51428ad6b70d1fc6bb0b79383e061855b9816201af28a3c30f09944d1ebf2bfd

SHA512
17010a6764c7152d64476d6d598dcd40c026ca698a3c4ecd759b0de462cff70ecb02a116bd19339d66d58127e0f4162844bd12eb3caeee896eedaa4255c204c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\dp1.fne

Filesize
92KB

MD5
f97b64218aa077468b30ae170664facd

SHA1
4bc14fa853b960074d00232b2302bc16255724b6

SHA256
9ff3898db362eb05f4c2f4b99d36cece8f7225c016836d63cdd2d196addda752

SHA512
716e0b0c05306852acfe76df749df1d57a08a7a55bf09d74593d4059d621cd690beea2b2b8e5bf6837e77aab01fce7e4baa39f82eb415d36debb72c7de83489b

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\krnln.fnr

Filesize
93KB

MD5
2f5293f5ec112a11befd6497f418a634

SHA1
02e65400df2184fccc5cf136336c1bb9542c94a1

SHA256
4b563e8ed546f42f14d51f2fa7efa6870e73fd41a4f34ef85af35291b0974f10

SHA512
191c381e34cbb974421e52a2200ea23d80604dbde026b0628daf0a352414e0b4a24656a3d03a025b8716ec6d77d7804959693fb70ab1214b9cef05dfc4480028

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\krnln.fnr

Filesize
409KB

MD5
c3d354bdf277263b13dca264ec2add9d

SHA1
b428dfd7df0f6024e22838823cc702e2293bd314

SHA256
ede1e15bb21655495ea3b3fb6710390d53839abeed944ed7ab1af7403b50aa5f

SHA512
24c8e96b3c07fa4e44fbb31a4e09bea728d90d410352aa9c6b6b6165ff5c038f689b7b58b05abc6513fa4ab953b78edc0f9e8298b2d57fe1c26e80068e7ca68e

Download Submit
memory/3948-21-0x0000000010000000-0x0000000010129000-memory.dmp

Filesize
1.2MB

Download
memory/3948-25-0x00000000020B0000-0x00000000020CE000-memory.dmp

Filesize
120KB

Download
memory/3948-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3948-48-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3948-47-0x0000000010000000-0x0000000010129000-memory.dmp

Filesize
1.2MB

Download
memory/4376-37-0x0000000010000000-0x0000000010129000-memory.dmp

Filesize
1.2MB

Download
memory/4376-38-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4376-36-0x0000000002350000-0x000000000236E000-memory.dmp

Filesize
120KB

Download
memory/4376-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4376-5-0x0000000010000000-0x0000000010129000-memory.dmp

Filesize
1.2MB

Download