23f0dcf06d4c4a7354f3e7f013022ed26afa823556e444054c1b0b4aec0bce78

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
28-07-2022 14:51

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General

Target

tmpbg_av_60.exe
Size

1.7MB
MD5

fad1b418110d37814930646d24ab4239
SHA1

f39606e98088b8e3e6d3707954c53385caf7f88a
SHA256

23f0dcf06d4c4a7354f3e7f013022ed26afa823556e444054c1b0b4aec0bce78
SHA512

d8c147683a4728383e80565ce538a0f12ad3191928158c33a65dfd6896e9ac33c58715fb199a88341ee206c6b85d18e7325d55616ebbbcc3c691c0f7f1344b97

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1976-137-0x0000000000900000-0x0000000000CE4000-memory.dmp	upx
behavioral2/memory/1976-138-0x0000000000900000-0x0000000000CE4000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

tmpbg_av_60.exe

description pid process target process

PID 4376 set thread context of 1976 4376 tmpbg_av_60.exe RegAsm.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4316 1976 WerFault.exe RegAsm.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3792 schtasks.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tmpbg_av_60.exe

description pid process

Token: SeDebugPrivilege 4376 tmpbg_av_60.exe

description	pid	process	target process
PID 4376 set thread context of 1976	4376	tmpbg_av_60.exe	RegAsm.exe

pid	pid_target	process	target process
4316	1976	WerFault.exe	RegAsm.exe

pid	process
3792	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4376	tmpbg_av_60.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

tmpbg_av_60.execmd.exe

description	pid	process	target process
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 1976	4376	tmpbg_av_60.exe	RegAsm.exe
PID 4376 wrote to memory of 2300	4376	tmpbg_av_60.exe	cmd.exe
PID 4376 wrote to memory of 2300	4376	tmpbg_av_60.exe	cmd.exe
PID 4376 wrote to memory of 2300	4376	tmpbg_av_60.exe	cmd.exe
PID 2300 wrote to memory of 3792	2300	cmd.exe	schtasks.exe
PID 2300 wrote to memory of 3792	2300	cmd.exe	schtasks.exe
PID 2300 wrote to memory of 3792	2300	cmd.exe	schtasks.exe
PID 4376 wrote to memory of 3524	4376	tmpbg_av_60.exe	cmd.exe
PID 4376 wrote to memory of 3524	4376	tmpbg_av_60.exe	cmd.exe
PID 4376 wrote to memory of 3524	4376	tmpbg_av_60.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\tmpbg_av_60.exe
"C:\Users\Admin\AppData\Local\Temp\tmpbg_av_60.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4376

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 540
3⤵
- Program crash
PID:4316

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\rewfv\rewfv.exe'" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:2300

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\rewfv\rewfv.exe'" /f
3⤵
- Creates scheduled task(s)
PID:3792

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\tmpbg_av_60.exe" "C:\Users\Admin\AppData\Roaming\rewfv\rewfv.exe"
2⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1976 -ip 1976
1⤵
PID:2604

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1976-134-0x0000000000000000-mapping.dmp

Download
memory/1976-137-0x0000000000900000-0x0000000000CE4000-memory.dmp

Filesize
3.9MB

Download
memory/1976-138-0x0000000000900000-0x0000000000CE4000-memory.dmp

Filesize
3.9MB

Download
memory/2300-136-0x0000000000000000-mapping.dmp

Download
memory/3524-140-0x0000000000000000-mapping.dmp

Download
memory/3792-139-0x0000000000000000-mapping.dmp

Download
memory/4376-132-0x0000000000BA0000-0x0000000000D60000-memory.dmp

Filesize
1.8MB

Download
memory/4376-133-0x0000000005B30000-0x00000000060D4000-memory.dmp

Filesize
5.6MB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads