emotet | cb638551632b271c9993266834e78a2c9a64a4b9deb8590497b0901f1044e6ff

Resubmissions

07-03-2023 21:18

230307-z5p2nabe8y 10

07-03-2023 20:15

230307-y1kqpsbg32 10

07-03-2023 12:20

230307-phtffshc7w 10

Analysis

max time kernel
682s
max time network
679s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
07-03-2023 20:15

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General

Target

INVOICE VL18998 07 March 23.doc
Size

506.2MB
MD5

a57a44cff1336300bbe9f2508cf19e65
SHA1

4de86fa9897363f5444105a34c6ae6982cfd4c2c
SHA256

cb638551632b271c9993266834e78a2c9a64a4b9deb8590497b0901f1044e6ff
SHA512

10413498e5248246da88dad27f7cedf1ad65f7cc94e10a470d65ec3cab000ed53b0e07ae226de7960842f509b54aaa2f2d6f74dd51dcb6b010d0d30362cba493
SSDEEP

3072:eoEW2aOtFjH0lP2IpjctfRcVVwEi/A8NVM1wIOCbX6bYLjWFJuvx7ueK6:ZE1aOtFa2I9c3aVw4zwxCbJ4Jup

Score

10^/10

emotet epoch4 banker persistence trojan

Malware Config

Extracted

Family

emotet

Botnet

Epoch4

129.232.188.93:443

164.90.222.65:443

159.65.88.10:8080

172.105.226.75:8080

115.68.227.76:8080

187.63.160.88:80

169.57.156.166:8080

185.4.135.165:8080

153.126.146.25:7080

197.242.150.244:8080

139.59.126.41:443

186.194.240.217:443

103.132.242.26:8080

206.189.28.199:8080

163.44.196.120:8080

95.217.221.146:8080

159.89.202.34:443

119.59.103.152:8080

183.111.227.137:8080

201.94.166.162:443

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\WINWORD.EXE is not expected to spawn this process	1224	440	regsvr32.exe	82

Loads dropped DLL 2 IoCs

pid	Process
1224	regsvr32.exe
1608	regsvr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zikxBf.dll = "C:\\Windows\\system32\\regsvr32.exe \"C:\\Windows\\system32\\QdumpWQcvIylnwos\\zikxBf.dll\""	regsvr32.exe

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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
440	WINWORD.EXE
440	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1224	regsvr32.exe
1224	regsvr32.exe
1608	regsvr32.exe
1608	regsvr32.exe
1608	regsvr32.exe
1608	regsvr32.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE
440	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 1224	440	WINWORD.EXE	84
PID 440 wrote to memory of 1224	440	WINWORD.EXE	84
PID 1224 wrote to memory of 1608	1224	regsvr32.exe	89
PID 1224 wrote to memory of 1608	1224	regsvr32.exe	89

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\INVOICE VL18998 07 March 23.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:440
- C:\Windows\System32\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\213812.tmp"
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\system32\regsvr32.exe
    C:\Windows\system32\regsvr32.exe "C:\Windows\system32\QdumpWQcvIylnwos\zikxBf.dll"
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    PID:1608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\213812.tmp

Filesize
508.7MB

MD5
42b64103b1c94e0acfa11b4d9f1709cd

SHA1
283ebc2ac0a24d3ac126efd724e2afb162f3ea1f

SHA256
de9128c4ed72697f78cca5d5f5bc728fe4ea5cc3cd47600a27687b590e87a69f

SHA512
a308dcdcddf96f25df634c53403c8ec7faf2701713f6440d959225727a2249354842112750fab04d7f273531a3828138dbd4f066c7b14221605d222f95ff2118

Download Submit
C:\Users\Admin\AppData\Local\Temp\213812.tmp

Filesize
508.7MB

MD5
42b64103b1c94e0acfa11b4d9f1709cd

SHA1
283ebc2ac0a24d3ac126efd724e2afb162f3ea1f

SHA256
de9128c4ed72697f78cca5d5f5bc728fe4ea5cc3cd47600a27687b590e87a69f

SHA512
a308dcdcddf96f25df634c53403c8ec7faf2701713f6440d959225727a2249354842112750fab04d7f273531a3828138dbd4f066c7b14221605d222f95ff2118

Download Submit
C:\Users\Admin\AppData\Local\Temp\213839.zip

Filesize
844KB

MD5
72908cf4242f62d0e1a5d4b9c21f8b93

SHA1
89d3f5ddae1f61a304ef917f166263afc41087be

SHA256
967e06c491ee3af22bacf239b352adbf4e7411ebbada73316846ee1ef643d9d2

SHA512
9f583158c04f4257210a27985a26cfe40c3afc418cc0adf837eabc727dd0f45e56c7f5256c15c90544bc48cf10d5e6f75d63fb794262edbe03880b64eb815229

Download Submit
C:\Windows\System32\QdumpWQcvIylnwos\zikxBf.dll

Filesize
508.7MB

MD5
42b64103b1c94e0acfa11b4d9f1709cd

SHA1
283ebc2ac0a24d3ac126efd724e2afb162f3ea1f

SHA256
de9128c4ed72697f78cca5d5f5bc728fe4ea5cc3cd47600a27687b590e87a69f

SHA512
a308dcdcddf96f25df634c53403c8ec7faf2701713f6440d959225727a2249354842112750fab04d7f273531a3828138dbd4f066c7b14221605d222f95ff2118

Download Submit
memory/440-135-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-133-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-139-0x00007FFE97070000-0x00007FFE97080000-memory.dmp

Filesize
64KB

Download
memory/440-136-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-134-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-215-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-138-0x00007FFE97070000-0x00007FFE97080000-memory.dmp

Filesize
64KB

Download
memory/440-213-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-137-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-214-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/440-212-0x00007FFE991D0000-0x00007FFE991E0000-memory.dmp

Filesize
64KB

Download
memory/1224-180-0x0000000001250000-0x0000000001251000-memory.dmp

Filesize
4KB

Download
memory/1224-177-0x0000000180000000-0x000000018002D000-memory.dmp

Filesize
180KB

Download
memory/1608-185-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1608-229-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download