d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25

General

Target

d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
Size

229KB
MD5

ca59e1d9b1d33ce3490269ce3766974d
SHA1

f5d3ecef61077dabebb19ac095c29eff37878d4c
SHA256

d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25
SHA512

4d9a69c08f15545bbb5e1ec345affea1bf58080672c3fda45b18aa606fcfd00edef73d86a93816ea6d8de66e9dd87a391faea89894e6be70975d0e7d9adc2457
SSDEEP

6144:88dNXSEpBIDTskaBiS6e5l9mmbvuSVAJEviKsv3Di5qVOtn:npqESS6e5lEumSVhpoDi5P9

Score

9^/10

persistence ransomware

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

Loads dropped DLL 4 IoCs

Processes:

d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe

pid	process
3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.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\isiqizuk = "\"C:\\Windows\\usoxusav.exe\""	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exed9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe

description	pid	process	target process
PID 3704 set thread context of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 4400 set thread context of 4808	4400	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File created C:\Windows\usoxusav.exe explorer.exe
File opened for modification C:\Windows\usoxusav.exe explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

4184 vssadmin.exe

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

pid	process
4184	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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3748 vssvc.exe
Token: SeRestorePrivilege 3748 vssvc.exe
Token: SeAuditPrivilege 3748 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	3748	vssvc.exe
Token: SeRestorePrivilege	3748	vssvc.exe
Token: SeAuditPrivilege	3748	vssvc.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exed9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exeexplorer.exe

C:\Users\Admin\AppData\Local\Temp\d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
"C:\Users\Admin\AppData\Local\Temp\d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3704

C:\Users\Admin\AppData\Local\Temp\d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
"C:\Users\Admin\AppData\Local\Temp\d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4400

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:4808

C:\Windows\SYSTEM32\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:4184

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3748

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

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\idumewitynofyran\01000000
Filesize
229KB

MD5
4987c1ffe03a013f9bd9ab38599a05af

SHA1
9793d28110d114c6dfc6fb5de4ceef5b627012af

SHA256
81cc81cd99e56c3ed5823f07694352ef7f83b9e1b2aad863c1707ebc0aab53ac

SHA512
5b821f63053053c796cbf4acf09260e04a962b1062ea9886540bd3be846ccff31dad1e0132d48d01ba3217af12c9aae65a48db16958aa577093bce4518bc080b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssAD.tmp\UserInfo.dll
Filesize
4KB

MD5
d9a3fc12d56726dde60c1ead1df366f7

SHA1
f531768159c14f07ac896437445652b33750a237

SHA256
401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a

SHA512
6b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssAD.tmp\UserInfo.dll
Filesize
4KB

MD5
d9a3fc12d56726dde60c1ead1df366f7

SHA1
f531768159c14f07ac896437445652b33750a237

SHA256
401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a

SHA512
6b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssAD.tmp\UserInfo.dll
Filesize
4KB

MD5
d9a3fc12d56726dde60c1ead1df366f7

SHA1
f531768159c14f07ac896437445652b33750a237

SHA256
401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a

SHA512
6b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssAD.tmp\ane.dll
Filesize
29KB

MD5
1f1ac338ebc0e5fa49ffeb78f40d6b5b

SHA1
b911254b50654927d34770507d2bcf0a8d44a780

SHA256
9ae8e14b33d7e34ea602e45ac9e5af87f5184379afe7b99164b627f031171cd1

SHA512
633a7839abd053a9fecc85d1ff0d2a4d09ab61350c47aceef3c221034b6a84a552c26c7d40333c16192374a70a9ea8c0797dad8962e21b7b8366ea2bee666487

Download Submit
memory/4184-146-0x0000000000000000-mapping.dmp

Download
memory/4400-139-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4400-143-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4400-137-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4400-145-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4400-136-0x0000000000000000-mapping.dmp

Download
memory/4808-140-0x0000000000000000-mapping.dmp

Download
memory/4808-141-0x0000000000370000-0x00000000003AC000-memory.dmp

Filesize
240KB

Download
memory/4808-147-0x0000000000370000-0x00000000003AC000-memory.dmp

Filesize
240KB

Download

description	pid	process	target process
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 3704 wrote to memory of 4400	3704	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe
PID 4400 wrote to memory of 4808	4400	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	explorer.exe
PID 4400 wrote to memory of 4808	4400	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	explorer.exe
PID 4400 wrote to memory of 4808	4400	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	explorer.exe
PID 4400 wrote to memory of 4808	4400	d9927fe092ccf71305cfb5b97b7306e78597af99b9313f5a855f569c491dcc25.exe	explorer.exe
PID 4808 wrote to memory of 4184	4808	explorer.exe	vssadmin.exe
PID 4808 wrote to memory of 4184	4808	explorer.exe	vssadmin.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads