581d8d2020c544f1643db5a65d33df332ad5c174a3e8ce1acb89a799d93712df

General

Target

Info.Pdf____________________________________________________________.exe
Size

494KB
MD5

cb607388d6b05dcf0d77fd06f563511d
SHA1

85717a638f5a3cc62b2f5e25897fcee997f35070
SHA256

8a375f861957b7effcda03ba43720d5bc14eeea97a33475a78b904714283d04e
SHA512

3bc8cd97bad6c38711eb67ff88b7cc158d991677a0a07d3efb73837d43eaa7bdbd7fb96d2f5a225f5a4fc39cc1aa2a2c6cd4091d201da79cb7be98fd459c246a
SSDEEP

6144:+7imLFJzjEIl1qcQL7twzWuWFyvgI/EhlRlI8tEUauf+zT3:6RljEIXZ6uaUgF3RllT+zT3

Score

9^/10

collection 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	explorer.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	explorer.exe

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\ewufldom = "C:\\Windows\\uchroxat.exe"	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Info.Pdf____________________________________________________________.exe

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

Info.Pdf____________________________________________________________.exeInfo.Pdf____________________________________________________________.exe

description	pid	process	target process
PID 2044 set thread context of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 1004 set thread context of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\uchroxat.exe explorer.exe
File created C:\Windows\uchroxat.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

1128 vssadmin.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1752 vssvc.exe
Token: SeRestorePrivilege 1752 vssvc.exe
Token: SeAuditPrivilege 1752 vssvc.exe

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

pid	process
1128	vssadmin.exe

description	pid	process
Token: SeBackupPrivilege	1752	vssvc.exe
Token: SeRestorePrivilege	1752	vssvc.exe
Token: SeAuditPrivilege	1752	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Info.Pdf____________________________________________________________.exeInfo.Pdf____________________________________________________________.exeexplorer.exe

description	pid	process	target process
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 2044 wrote to memory of 1004	2044	Info.Pdf____________________________________________________________.exe	Info.Pdf____________________________________________________________.exe
PID 1004 wrote to memory of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe
PID 1004 wrote to memory of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe
PID 1004 wrote to memory of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe
PID 1004 wrote to memory of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe
PID 1004 wrote to memory of 468	1004	Info.Pdf____________________________________________________________.exe	explorer.exe
PID 468 wrote to memory of 1128	468	explorer.exe	vssadmin.exe
PID 468 wrote to memory of 1128	468	explorer.exe	vssadmin.exe
PID 468 wrote to memory of 1128	468	explorer.exe	vssadmin.exe
PID 468 wrote to memory of 1128	468	explorer.exe	vssadmin.exe

outlook_win_path 1 IoCs

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	explorer.exe

C:\Users\Admin\AppData\Local\Temp\Info.Pdf____________________________________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\Info.Pdf____________________________________________________________.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044

C:\Users\Admin\AppData\Local\Temp\Info.Pdf____________________________________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\Info.Pdf____________________________________________________________.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1004

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\system32\explorer.exe"
3⤵
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
- outlook_win_path
PID:468

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:1128

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

2

T1114

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\oziqemegewypyvuh\01000000
Filesize
494KB

MD5
39390d06e7c0d6dfe7cbcc09a55a1bb9

SHA1
06f4970c9efb79ac2abe88c58490badc7d97eab6

SHA256
735a519597741e99592413611fa50b559ca46e1e386a50239061dc667b272896

SHA512
14e41f2c67c62fd620d3e01578a2f078e26d361290df87004d6bee2cb5363b3f955c7256ee53cec550188b61d9805fe4b5fe9d590c2ebbbf47ade68dbdc177e6

Download Submit
memory/468-71-0x0000000000080000-0x00000000000BE000-memory.dmp

Filesize
248KB

Download
memory/468-83-0x0000000000080000-0x00000000000BE000-memory.dmp

Filesize
248KB

Download
memory/468-82-0x0000000072B51000-0x0000000072B53000-memory.dmp

Filesize
8KB

Download
memory/468-80-0x0000000000080000-0x00000000000BE000-memory.dmp

Filesize
248KB

Download
memory/468-77-0x0000000074FA1000-0x0000000074FA3000-memory.dmp

Filesize
8KB

Download
memory/468-75-0x000000000009BE80-mapping.dmp

Download
memory/468-73-0x0000000000080000-0x00000000000BE000-memory.dmp

Filesize
248KB

Download
memory/1004-58-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-70-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-66-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-65-0x000000000040B4D3-mapping.dmp

Download
memory/1004-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-55-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-60-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-79-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1004-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1128-81-0x0000000000000000-mapping.dmp

Download
memory/2044-54-0x0000000075881000-0x0000000075883000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads