8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1

General

Target

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
Size

554KB
MD5

11e2eb31409121c02eefab8dbc1a7b46
SHA1

0a58b8aa227aaec32d26ef2b6281108d95d4e255
SHA256

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1
SHA512

e6a5565b73d22cbe46547dc5cf79c4e6d46b43d1f5c687bd84236916c856d2173970da83b013bcabe830eb58aaac2d4821a785aea166933eba1ad1ab8a90d332

Score

9^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ohumaren = "\"C:\\Windows\\ohuwozub.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe

description	pid	process	target process
PID 824 set thread context of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 1456 set thread context of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\ohuwozub.exe explorer.exe
File created C:\Windows\ohuwozub.exe explorer.exe
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

468 vssadmin.exe

description	ioc	process
File opened for modification	C:\Windows\ohuwozub.exe	explorer.exe
File created	C:\Windows\ohuwozub.exe	explorer.exe

pid	process
468	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe

pid process

824 8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1724 vssvc.exe
Token: SeRestorePrivilege 1724 vssvc.exe
Token: SeAuditPrivilege 1724 vssvc.exe

pid	process
824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe

description	pid	process
Token: SeBackupPrivilege	1724	vssvc.exe
Token: SeRestorePrivilege	1724	vssvc.exe
Token: SeAuditPrivilege	1724	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exeexplorer.exe

description	pid	process	target process
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 824 wrote to memory of 1456	824	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
PID 1456 wrote to memory of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe
PID 1456 wrote to memory of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe
PID 1456 wrote to memory of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe
PID 1456 wrote to memory of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe
PID 1456 wrote to memory of 1784	1456	8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe	explorer.exe
PID 1784 wrote to memory of 468	1784	explorer.exe	vssadmin.exe
PID 1784 wrote to memory of 468	1784	explorer.exe	vssadmin.exe
PID 1784 wrote to memory of 468	1784	explorer.exe	vssadmin.exe
PID 1784 wrote to memory of 468	1784	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
"C:\Users\Admin\AppData\Local\Temp\8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:824

C:\Users\Admin\AppData\Local\Temp\8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe
"C:\Users\Admin\AppData\Local\Temp\8dce9befaa51ee919dc115772ad0b02e21612a0ccd3170e1343d006ded547bd1.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1456

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\system32\explorer.exe"
3⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
PID:1784

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:468

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1724

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\ywynugoxasijikec\01000000
Filesize
554KB

MD5
6fc8b82e0a6b3eb49c080e6405fbef18

SHA1
f60e963a696bbe07c5c43c137ea31f381fe7b69c

SHA256
b90181a96b587d485d1b4138c02c023508e9cda12f4823cdf90a9105aa36604a

SHA512
61773b4b32729001ac45fd1e0f93c032da45b91591bd3834ca2f2064fb9c30f5799c0aeedffd1f6bb02c599ff404c08afa50ee89040ab0589ea8c96dcbdaa29d

Download Submit
memory/468-79-0x0000000000000000-mapping.dmp

Download
memory/824-54-0x0000000075741000-0x0000000075743000-memory.dmp

Filesize
8KB

Download
memory/1456-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-76-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-58-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-55-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-65-0x000000000040A61E-mapping.dmp

Download
memory/1456-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1456-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1784-69-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1784-75-0x00000000753F1000-0x00000000753F3000-memory.dmp

Filesize
8KB

Download
memory/1784-73-0x00000000000DA160-mapping.dmp

Download
memory/1784-78-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1784-71-0x00000000000C0000-0x00000000000FC000-memory.dmp

Filesize
240KB

Download
memory/1784-80-0x0000000072EA1000-0x0000000072EA3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads