efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9

Analysis

max time kernel
136s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 19:16

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General

Target

efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe
Size

177KB
MD5

9021ed3f00f1be5bb1a49a14b0ad2120
SHA1

8ad1db39b58f422e3fb58e3bc4eee19842474597
SHA256

efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9
SHA512

966c51b3a35260f31c02f51211a5ce4f036569b6f87533665809afe39e0f000c955df5097c568a9ce0fff78d6c108d6e87a466de1acc0e806554a60a6f56a14e
SSDEEP

1536:9C8tA5z5MS62cxVfLVFio+HETUjBEikc94vNUNT+piHJO5cghLjJzK:xAhlbcDziW4/kvfp+oFzK

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4580	Acknkn.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Acknkn = "C:\\Users\\Admin\\AppData\\Roaming\\Acknkn.exe"	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991563"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4125406304"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373066709"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30991563"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991563"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4117436665"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4117436665"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{20DDCAEE-50BF-11ED-A0EE-7EA98FCFBA26} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe
1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4408	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4580	Acknkn.exe
Token: SeDebugPrivilege	2260	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4408	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe
4580	Acknkn.exe
4408	IEXPLORE.EXE
4408	IEXPLORE.EXE
2260	IEXPLORE.EXE
2260	IEXPLORE.EXE
2260	IEXPLORE.EXE
2260	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 4580	1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe	89
PID 1484 wrote to memory of 4580	1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe	89
PID 1484 wrote to memory of 4580	1484	efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe	89
PID 4580 wrote to memory of 368	4580	Acknkn.exe	92
PID 4580 wrote to memory of 368	4580	Acknkn.exe	92
PID 4580 wrote to memory of 368	4580	Acknkn.exe	92
PID 368 wrote to memory of 4408	368	iexplore.exe	93
PID 368 wrote to memory of 4408	368	iexplore.exe	93
PID 4408 wrote to memory of 2260	4408	IEXPLORE.EXE	94
PID 4408 wrote to memory of 2260	4408	IEXPLORE.EXE	94
PID 4408 wrote to memory of 2260	4408	IEXPLORE.EXE	94
PID 4580 wrote to memory of 2260	4580	Acknkn.exe	94
PID 4580 wrote to memory of 2260	4580	Acknkn.exe	94

C:\Users\Admin\AppData\Local\Temp\efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe
"C:\Users\Admin\AppData\Local\Temp\efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Users\Admin\AppData\Roaming\Acknkn.exe
  "C:\Users\Admin\AppData\Roaming\Acknkn.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:368
  - - C:\Program Files\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4408
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4408 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2260

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:4620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
6a15e3564b9eb382fe5534f59d6fccb4

SHA1
911dbc1a988c2d6816beb0c21c4ea5402253b884

SHA256
6b478c66c9a2024177d4a478ccea9a82f3162aa87a5125a0dc3750c920bdbc62

SHA512
2801f46d495eed08dbb10e73ccda4828faf4ef6b1ff3ff45ce8d73331e692381c25417d15c958f8c3f9c6932300cd0e66b1aad6bb5a92e2bf27b338b6d245711

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
6adc2eb805cfb91b039b22243bf5c61b

SHA1
6400a9f7649cc64fefac17da8e5fe51022a741ed

SHA256
a440ceb98d27136c0663bb15de7bcf8ca9876a64250d61af2347ea6f72199566

SHA512
99b36d3678aa4f00f6a298cbc5eedf74cf486a5beb479d64358a984d74898ff8d99bad4193103acd8a06877f1e5d76becfa617dfe6f161ed9bb42e01d5806dde

Download Submit
C:\Users\Admin\AppData\Roaming\Acknkn.exe

Filesize
177KB

MD5
9021ed3f00f1be5bb1a49a14b0ad2120

SHA1
8ad1db39b58f422e3fb58e3bc4eee19842474597

SHA256
efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9

SHA512
966c51b3a35260f31c02f51211a5ce4f036569b6f87533665809afe39e0f000c955df5097c568a9ce0fff78d6c108d6e87a466de1acc0e806554a60a6f56a14e

Download Submit
C:\Users\Admin\AppData\Roaming\Acknkn.exe

Filesize
177KB

MD5
9021ed3f00f1be5bb1a49a14b0ad2120

SHA1
8ad1db39b58f422e3fb58e3bc4eee19842474597

SHA256
efbe29e7e508ee4a69a8d7d113e52c624cf4e78dc0a8c6d8e74b3b9b86a07ba9

SHA512
966c51b3a35260f31c02f51211a5ce4f036569b6f87533665809afe39e0f000c955df5097c568a9ce0fff78d6c108d6e87a466de1acc0e806554a60a6f56a14e

Download Submit
memory/1484-136-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1484-132-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1484-140-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1484-135-0x0000000002850000-0x0000000002866000-memory.dmp

Filesize
88KB

Download
memory/1484-133-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4580-141-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4580-143-0x0000000000A70000-0x0000000000A86000-memory.dmp

Filesize
88KB

Download
memory/4580-144-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4580-145-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download