41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4

Analysis

max time kernel
150s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06-03-2023 03:00

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General

Target

41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe
Size

44KB
MD5

7136931e5fb1f3b5759a77b32dd522fe
SHA1

503cad17e04bbd2833837103aece2ec1a2ee416d
SHA256

41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4
SHA512

e4ee92d1cdf589685b3f63f0f4086e005eef8e862049a5fe98a2b2a0fb8930c888bcd87ee76c6b7b80a91ab78dc47c451b1e325a15c66a9013309f7443f12e24
SSDEEP

768:hfXKTHyY+h6ovFQGPL4vzZq2o9W7GsxBbPr:pX2SCoviGCq2iW7z

Score

7^/10

aspackv2

Malware Config

Signatures

ASPack v2.12-2.42 5 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\yvEAMj.exe	aspack_v212_v242
\Users\Admin\AppData\Local\Temp\yvEAMj.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe	aspack_v212_v242
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe	aspack_v212_v242

Executes dropped EXE 1 IoCs

Processes:

yvEAMj.exe

pid process

2028 yvEAMj.exe

pid	process
2028	yvEAMj.exe

Loads dropped DLL 2 IoCs

Processes:

41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe

pid	process
1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe
1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe

Drops file in Program Files directory 64 IoCs

Processes:

yvEAMj.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\XLICONS.EXE	yvEAMj.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javap.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\launcher.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Checkers\chkrzm.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOHTMED.EXE	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\NAMECONTROLSERVER.EXE	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\WORDICON.EXE	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\java-rmi.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\rmic.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\java-rmi.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\javacpl.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\CNFNOT32.EXE	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jmap.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jmc.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\servertool.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\rmid.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javaws.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jps.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ssvagent.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\chrmstp.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\javaw.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Windows Journal\PDIALOG.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\ImagingDevices.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javadoc.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\keytool.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\rmid.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\keytool.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\jp2launcher.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\tnameserv.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Microsoft Games\Chess\Chess.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Mozilla Firefox\pingsender.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\notification_helper.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jinfo.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jvisualvm.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateComRegisterShell64.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\ktab.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\lib\nbexec.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\jabswitch.exe	yvEAMj.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateBroker.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\jsadebugd.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\native2ascii.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\policytool.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\rmiregistry.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jre7\bin\java-rmi.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MSOUC.EXE	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\extcheck.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\ktab.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\wsimport.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Mozilla Firefox\uninstall\helper.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AdobeCollabSync.exe	yvEAMj.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Microsoft Games\Mahjong\Mahjong.exe	yvEAMj.exe
File opened for modification	C:\Program Files\Microsoft Office\Office14\MSOHTMED.EXE	yvEAMj.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\appletviewer.exe	yvEAMj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exeyvEAMj.exe

description	pid	process	target process
PID 1712 wrote to memory of 2028	1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe	yvEAMj.exe
PID 1712 wrote to memory of 2028	1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe	yvEAMj.exe
PID 1712 wrote to memory of 2028	1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe	yvEAMj.exe
PID 1712 wrote to memory of 2028	1712	41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe	yvEAMj.exe
PID 2028 wrote to memory of 1692	2028	yvEAMj.exe	cmd.exe
PID 2028 wrote to memory of 1692	2028	yvEAMj.exe	cmd.exe
PID 2028 wrote to memory of 1692	2028	yvEAMj.exe	cmd.exe
PID 2028 wrote to memory of 1692	2028	yvEAMj.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe
"C:\Users\Admin\AppData\Local\Temp\41c2ef41b8c2289bb3a8af4e257ccbdf24dda88ed5ae3066ec66793244fb92b4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1712

C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe
2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\66d066a2.bat" "
3⤵
PID:1692

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\KTB503AZ\k2[1].rar
Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\28C47C36.exe
Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\66d066a2.bat
Filesize
187B

MD5
e6a6e900926980d21f703775058fd57c

SHA1
283ae00cafa081548d82dd328f4047df534656d4

SHA256
1db19b26563952d4376048a4f5ec5f026e80a756793130c350eb98f5116d3607

SHA512
cbfd293943ee15d85400e22d24128ab269ae7c7731487d002777d6549e5c7a6fb032035dfdf2c877b6ba7cf9bb76156eb87e577f19b6cb24d80c545baf0a6edd

Download Submit
C:\Users\Admin\AppData\Local\Temp\66d066a2.bat
Filesize
187B

MD5
e6a6e900926980d21f703775058fd57c

SHA1
283ae00cafa081548d82dd328f4047df534656d4

SHA256
1db19b26563952d4376048a4f5ec5f026e80a756793130c350eb98f5116d3607

SHA512
cbfd293943ee15d85400e22d24128ab269ae7c7731487d002777d6549e5c7a6fb032035dfdf2c877b6ba7cf9bb76156eb87e577f19b6cb24d80c545baf0a6edd

Download Submit
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\yvEAMj.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
\Users\Admin\AppData\Local\Temp\yvEAMj.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
\Users\Admin\AppData\Local\Temp\yvEAMj.exe
Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
memory/1712-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2028-65-0x0000000000F10000-0x0000000000F19000-memory.dmp

Filesize
36KB

Download
memory/2028-91-0x0000000000F10000-0x0000000000F19000-memory.dmp

Filesize
36KB

Download