79a0c053eb1b1ebbf36faf5a6464a3e20ad9dd36c317212a9ff7c4ae8de08224

Analysis

max time kernel
97s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 13:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c72839924b296de9d93bf0d0f0b0ae90N.exe
Size

68KB
MD5

c72839924b296de9d93bf0d0f0b0ae90
SHA1

4d89a886b6edd2d6d8cf0f3c9252d40fda5d4f11
SHA256

79a0c053eb1b1ebbf36faf5a6464a3e20ad9dd36c317212a9ff7c4ae8de08224
SHA512

ffab585da975174372dd537a03436b4a01abef81b1a16a5dbfc04383694859c05a75658e6cd61c734b1ad4751a744f645af5d21a76989dcdc9fc60886d23e003
SSDEEP

1536:Htq94hUwA6CTC7ckEtCJTmHH5jXHdQ/JoUJsV44cpU:xS6CGAkESQ5jHdQBJs

Score

8^/10

discovery 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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	c72839924b296de9d93bf0d0f0b0ae90N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\llajyn_df = "C:\\Windows\\system\\lljyn090101.exe"	c72839924b296de9d93bf0d0f0b0ae90N.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	c72839924b296de9d93bf0d0f0b0ae90N.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\llbjyn32bb.dll	c72839924b296de9d93bf0d0f0b0ae90N.exe
File created	C:\Windows\system\llbjyn32bb.dll	c72839924b296de9d93bf0d0f0b0ae90N.exe
File created	C:\Windows\system\lljyn090101.exe	c72839924b296de9d93bf0d0f0b0ae90N.exe
File opened for modification	C:\Windows\system\lljyn090101.exe	c72839924b296de9d93bf0d0f0b0ae90N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c72839924b296de9d93bf0d0f0b0ae90N.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1192	PING.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "no"	c72839924b296de9d93bf0d0f0b0ae90N.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "764777082"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31128693"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "760402149"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "760402149"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\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
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31128693"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "431963259"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{58EBA8FD-6868-11EF-939B-62A6B307388A} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31128693"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1192	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
4932	c72839924b296de9d93bf0d0f0b0ae90N.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
Token: SeDebugPrivilege	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
Token: SeDebugPrivilege	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe
Token: SeDebugPrivilege	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5104	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
5104	iexplore.exe
5104	iexplore.exe
1660	IEXPLORE.EXE
1660	IEXPLORE.EXE
1660	IEXPLORE.EXE
1660	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 5104	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	95
PID 4932 wrote to memory of 5104	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	95
PID 5104 wrote to memory of 1660	5104	iexplore.exe	96
PID 5104 wrote to memory of 1660	5104	iexplore.exe	96
PID 5104 wrote to memory of 1660	5104	iexplore.exe	96
PID 4932 wrote to memory of 5104	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	95
PID 4932 wrote to memory of 1260	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	97
PID 4932 wrote to memory of 1260	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	97
PID 4932 wrote to memory of 1260	4932	c72839924b296de9d93bf0d0f0b0ae90N.exe	97
PID 1260 wrote to memory of 1192	1260	cmd.exe	99
PID 1260 wrote to memory of 1192	1260	cmd.exe	99
PID 1260 wrote to memory of 1192	1260	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\c72839924b296de9d93bf0d0f0b0ae90N.exe
"C:\Users\Admin\AppData\Local\Temp\c72839924b296de9d93bf0d0f0b0ae90N.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4932
- C:\program files\internet explorer\iexplore.exe
  "C:\program files\internet explorer\iexplore.exe"
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5104
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5104 CREDAT:17410 /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1660
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\dfDelmlljy.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1260
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1192

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

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\lljyndf16.ini

Filesize
85B

MD5
9fce7039e13215513a7fa2bf693bd6f3

SHA1
1188012bf423dc1730f1dfe8fa7c613967a14305

SHA256
929674867dff75548664ef62a39d27d38522ecb1bae8d4fc2b3c2ea9333e2d85

SHA512
cfeb816ebdb625f30a14147cc2aacc8e43a2f429e61fd7600b2ffba508d43a6578f6e83479df179c5bdfea636f6dc944a13433f6a23538783274449c4b23a9ca

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

Filesize
471B

MD5
1c7226fea3dc2059287a4a2ae7519102

SHA1
ddf68a29afc928251f9743341d5fe0be207479ad

SHA256
ccaab5444ee41ed3c94268a55693fe4157f72e980d2dc3687ac98bab1a265396

SHA512
b646d2a7d9d8fbc5846f8ecc8a69e7913c603cbad1a488f24b75a0e371e3e367c596dc3fbae2ebbfb486e17b5f248ee4c47d34c6b5e7cdd7cc387d184e8366e1

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

Filesize
404B

MD5
47f5c1ba0327c834e872e2ff91e63811

SHA1
bbf707c4528fd6fbb420243c9d4aedd61ecd90e4

SHA256
96a0a23f7b7c1155d3d41a320c353a1fb0c9a2463cd58f3042a0a5372ea7225b

SHA512
464b3d07bf6250b19daf9da9178c85c937ef3ebf49510e4c3713581dd2e169ab6a67c2ea7341e1c88874060bd7babafa7fd98938856f40fb77a6b8b12f8b32ee

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\68XY2BI1\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\dfDelmlljy.bat

Filesize
207B

MD5
22187c81105b43ae78940848cea05cb4

SHA1
ac62d6e506a7353881bc9cf827895d93ac987d38

SHA256
73b0158ee44a774981a7fe2d30f89adb0d590126dadb95c0e6bbad9a1cb02a04

SHA512
b00d1d924314b49e1c3d3d37f28cc3f82583afebc55d546d549b58486bf9ec9ffd15d0f0fc970643989215a069a0965bb8702c04468e8991015c11dbb6a12377

Download Submit
memory/4932-0-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4932-12-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4932-16-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download