6aecb3819fc7a0d935dde6e820362b1e3b56c3af9017e53e411f5c86d7f8d8c9

Analysis

max time kernel
92s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 20:17

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General

Target

b98fdbfa297592b2692c69aaa7c5830d.exe
Size

35KB
MD5

b98fdbfa297592b2692c69aaa7c5830d
SHA1

e7e3f74bca188db25141ab45180687a65aafd51c
SHA256

6aecb3819fc7a0d935dde6e820362b1e3b56c3af9017e53e411f5c86d7f8d8c9
SHA512

d148b5cfbd3d91beb74e2683751efbafbd656e593e21c07cee3af6e11a1ec718df4d8ca7c895a5702cb608239d6e790da6309afe2db138e074831829461f8f76
SSDEEP

768:IVNEmWKxoqNmNTsDzcImd9k7kmO6Ovn02EP8Z2gWU3A3Y:aoNADzcIG9kfjuEP1dgAI

Score

8^/10

persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\nmzy_df = "C:\\Windows\\system\\zyndle081022.exe"	b98fdbfa297592b2692c69aaa7c5830d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	b98fdbfa297592b2692c69aaa7c5830d.exe

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	b98fdbfa297592b2692c69aaa7c5830d.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\system\zyndle081022.exe	b98fdbfa297592b2692c69aaa7c5830d.exe
File opened for modification	C:\Windows\system\zyndle081022.exe	b98fdbfa297592b2692c69aaa7c5830d.exe
File created	C:\Windows\system\zyndld32081022.dll	b98fdbfa297592b2692c69aaa7c5830d.exe
File created	C:\Windows\system\zyndld32081022jt.dll	b98fdbfa297592b2692c69aaa7c5830d.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 33 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31092940"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2778812860"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2778968412"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416607662"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31092940"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{CFA4D61B-DCBF-11EE-BD28-C6E29C351F1E} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2773656658"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\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-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2773656658"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "no"	b98fdbfa297592b2692c69aaa7c5830d.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31092940"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31092940"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3132	PING.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe
2244	b98fdbfa297592b2692c69aaa7c5830d.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	b98fdbfa297592b2692c69aaa7c5830d.exe
Token: SeDebugPrivilege	2244	b98fdbfa297592b2692c69aaa7c5830d.exe
Token: SeDebugPrivilege	2244	b98fdbfa297592b2692c69aaa7c5830d.exe
Token: SeDebugPrivilege	2244	b98fdbfa297592b2692c69aaa7c5830d.exe
Token: SeDebugPrivilege	2244	b98fdbfa297592b2692c69aaa7c5830d.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4080	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4080	iexplore.exe
4080	iexplore.exe
316	IEXPLORE.EXE
316	IEXPLORE.EXE
316	IEXPLORE.EXE
316	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4080	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	84
PID 2244 wrote to memory of 4080	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	84
PID 4080 wrote to memory of 316	4080	iexplore.exe	85
PID 4080 wrote to memory of 316	4080	iexplore.exe	85
PID 4080 wrote to memory of 316	4080	iexplore.exe	85
PID 2244 wrote to memory of 4080	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	84
PID 2244 wrote to memory of 3540	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	57
PID 2244 wrote to memory of 1148	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	86
PID 2244 wrote to memory of 1148	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	86
PID 2244 wrote to memory of 1148	2244	b98fdbfa297592b2692c69aaa7c5830d.exe	86
PID 1148 wrote to memory of 3132	1148	cmd.exe	88
PID 1148 wrote to memory of 3132	1148	cmd.exe	88
PID 1148 wrote to memory of 3132	1148	cmd.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3540
- C:\Users\Admin\AppData\Local\Temp\b98fdbfa297592b2692c69aaa7c5830d.exe
  "C:\Users\Admin\AppData\Local\Temp\b98fdbfa297592b2692c69aaa7c5830d.exe"
  2⤵
  - Adds policy Run key to start application
  - Checks computer location settings
  - Drops file in Windows directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\program files\internet explorer\iexplore.exe
    "C:\program files\internet explorer\iexplore.exe"
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4080
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4080 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:316
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\dfDelmlljy.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1148
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1
      4⤵
      Runs ping.exe
      PID:3132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\zyndf16.ini

Filesize
129B

MD5
0403d08f470129d937c045ce6b9210c7

SHA1
02876bd74b22e22f13716981efdf3fe605c0d5fb

SHA256
8f28bca8f5276d878ce1d32d888b24599fa751f13b13721c7414dae1068738eb

SHA512
140002ab4dccd08297e7813296ffc69ddb8a97f8a932447c779d9ba9ede54940d4221d00a49ce6815c5afa53fc755aa2f37a98b5bf783b3d24237e77c3a3dfb1

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

Filesize
471B

MD5
532b6cdba2060fe5877f91fc5c79a60b

SHA1
f05f9554fad15170c45b45d50e05b73763da6217

SHA256
7ca2e18bd338736eb172b77af40c66e3cae3fee90ef034d19219e716cee63a78

SHA512
c17b4cb9b1f08f989882c8937884be4ebd2ad16b283405cfd9fd6cbfd298fd3075e1700077e733f092d5c1a7aa3450b9aa433ab31f0dc0a912f0c1089f4fa719

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

Filesize
404B

MD5
ab9c99d128045af3040434da3ed767c1

SHA1
240ffab71de01a348949f0cc52d8af4c071e1ff8

SHA256
bbd85ef4e00109b3215a2b43f031d65b85ff78f4b2f44e96f1756b500c6ef3a3

SHA512
79a3723ce382c2a0d8ddae0862560dc851f097162670791bd6dfd3c3032405123e4ca85333c5f75f407a13ca17caeaeba0d0601dba565fc16bbb90d6c53a3a3c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verF6C4.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\UG0DPB4T\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\dfDelmlljy.bat

Filesize
205B

MD5
c2e8c58e42021cd48b512eb853db8c8d

SHA1
43ae0250c079071f33b1a7edbe7edc50f7284974

SHA256
8c1ebfa8f66e049c45c1a0b6fbb698dde1d3405f445b49b0ef28059fb2b05a66

SHA512
96be58235affd4fb575a53b2ad33e7d27189ded7077d3db4cb28579ac0cfd42a39d2a3f7c7e71f92712b3bc44a1546b006464dd57b2a63666d65a4bab23624c6

Download Submit