a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243

General

Target

a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe
Size

20KB
MD5

8236b1cc20fde4c5065381272f29c180
SHA1

b0c9e25cfd09830d7aba279885f63b9ae6b0f97a
SHA256

a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243
SHA512

52c4e8840944941d3d72b42d729d7a8aaac8a9372c48162f994ab5c70775024f689299938d320576f849e13c17c9762cfa3d670130a92bdcfdf6dabe7529246b
SSDEEP

384:rUeMBcTAcl810UugcosSe6XiUdNLLLLLLLLLLL9gbcRv1qAnYSQ:rFMCTAc+qlF7QiUdNLLLLLLLLLLL0AYv

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1192-132-0x0000000000400000-0x00000000007E0000-memory.dmp	upx
behavioral2/memory/1192-133-0x0000000000400000-0x00000000007E0000-memory.dmp	upx

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\dparams.txt	a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 20 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b14216000000000200000000001066000000010000200000001cd568cabd048ed9f04300e4bc9c9cd430b8b3f8ed49cf2520d1382b9f9df05f000000000e8000000002000020000000373c63671857e4fafcc3f63db3db864502b15ff12926af315bb0d57b3eef26cd200000001255f233dca5ff1f61e779c98b8b280e859e680db320fe845c10f8c6874ffa9940000000c56cbd657ba57122154e1247cc2588e1f2eedd249d54330627b3d698deb92aeef421bd33e421217fac24a74f63be18234b80cff78cd1accc1501f99eaaf563db	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "366488747"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e2728ad8693e804caf0ad2c227b14216000000000200000000001066000000010000200000002601f34edab971e097528b93b6a80323a94570d0fa9db82e608a6b97e2a6cb25000000000e8000000002000020000000f463044ce4c575e9fdb885f0001313cb554fab5840f3a3f6b9c5a325eed8d5c92000000015334e99c7fbfe8840c67e4e00f5d6fe051896062feff2f0200f8d01438d94c94000000061be83f99c6c39bc7733193fe8f7a2d3231dec1a8b8922cf08161ec5af5cdec1152b8d0feaa414f11428c7afffaa934c6e869e3c9d10caefc65017c27741fc59	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 70aca5a474aed801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B60DFA92-58F2-11ED-B696-E62BBF623C53} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = b06d8ba474aed801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe

Suspicious behavior: LoadsDriver 6 IoCs

pid	Process
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
648	Process not Found

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1180	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1180	iexplore.exe
1180	iexplore.exe
1536	IEXPLORE.EXE
1536	IEXPLORE.EXE
1536	IEXPLORE.EXE
1536	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 1180	1192	a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe	80
PID 1192 wrote to memory of 1180	1192	a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe	80
PID 1180 wrote to memory of 1536	1180	iexplore.exe	81
PID 1180 wrote to memory of 1536	1180	iexplore.exe	81
PID 1180 wrote to memory of 1536	1180	iexplore.exe	81

C:\Users\Admin\AppData\Local\Temp\a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe
"C:\Users\Admin\AppData\Local\Temp\a6cf37a44fcdb30220b0d1c249cec909f1fcddf15956c6cc1448f456fb13d243.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" http://www.redirectingtocontent.com/go.php?siteid=37&country=USA
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1180 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

memory/1192-132-0x0000000000400000-0x00000000007E0000-memory.dmp

Filesize
3.9MB

Download
memory/1192-133-0x0000000000400000-0x00000000007E0000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing