c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2

General

Target

6a606f43c1efe9e9c3e2c20d5ae7913d.exe
Size

1.4MB
MD5

6a606f43c1efe9e9c3e2c20d5ae7913d
SHA1

973bc27890a409fdd834932b4696035ad2667180
SHA256

c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2
SHA512

f77df6618e2d097152b6aa05298a75d8bfbfe70f4b4ec5627a66f154655eebc354cd5b7dfc93d705fcdeadd768a54f4daaf52a4c7482dc2ca7d4d4d3a8f72df3
SSDEEP

24576:F6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Eu:UY9UORVOM1jJHzaiape0hsABFRJch6LS

Score

9^/10

rezer0 upx

Malware Config

Signatures

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/4208-12-0x00000000059C0000-0x00000000059EC000-memory.dmp	rezer0

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

test.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation test.exe
Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

4208 test.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	test.exe

pid	process
4208	test.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1040-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/1040-14-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/1040-22-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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/Job
T1053

Processes:

schtasks.exe

pid process

3480 schtasks.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

test.exe

pid process

4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
4208 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 4208 test.exe

pid	process
3480	schtasks.exe

pid	process
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe
4208	test.exe

description	pid	process
Token: SeDebugPrivilege	4208	test.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

6a606f43c1efe9e9c3e2c20d5ae7913d.execmd.exetest.exe

description	pid	process	target process
PID 1040 wrote to memory of 2852	1040	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 1040 wrote to memory of 2852	1040	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 1040 wrote to memory of 2852	1040	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 2852 wrote to memory of 4208	2852	cmd.exe	test.exe
PID 2852 wrote to memory of 4208	2852	cmd.exe	test.exe
PID 2852 wrote to memory of 4208	2852	cmd.exe	test.exe
PID 4208 wrote to memory of 3480	4208	test.exe	schtasks.exe
PID 4208 wrote to memory of 3480	4208	test.exe	schtasks.exe
PID 4208 wrote to memory of 3480	4208	test.exe	schtasks.exe
PID 4208 wrote to memory of 4568	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 4568	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 4568	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 4548	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 4548	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 4548	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1800	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1800	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1800	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 2588	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 2588	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 2588	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1500	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1500	4208	test.exe	vbc.exe
PID 4208 wrote to memory of 1500	4208	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe
"C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:2852

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4208

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp74A3.tmp"
4⤵
- Creates scheduled task(s)
PID:3480

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:4568

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:4548

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:1800

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2588

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:1500

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1

T1064

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\test.exe
Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp74A3.tmp
Filesize
1KB

MD5
84642f7df4b3d7098ef04b0b8d809f55

SHA1
246dd381375fad4e1d0ddd48569e7ea48bb7cbea

SHA256
cc93fb851f2dccef75b104cd4a591ed0f24ac9f7f2d73f5b4e7e3111c0db85ce

SHA512
e7c486499470414d949f2156540b586d077377180aac67548aeb14845bd71c8c7e127def90ef9147b0501842051cdbe84e8d6008db7ed2a44c775a8a493bb313

Download Submit
memory/1040-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/1040-22-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/1040-14-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/4208-9-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/4208-8-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/4208-10-0x0000000005800000-0x000000000580A000-memory.dmp

Filesize
40KB

Download
memory/4208-11-0x00000000057F0000-0x00000000057F8000-memory.dmp

Filesize
32KB

Download
memory/4208-12-0x00000000059C0000-0x00000000059EC000-memory.dmp

Filesize
176KB

Download
memory/4208-13-0x0000000006270000-0x000000000630C000-memory.dmp

Filesize
624KB

Download
memory/4208-7-0x0000000005B20000-0x00000000060C4000-memory.dmp

Filesize
5.6MB

Download
memory/4208-6-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4208-21-0x00000000746D0000-0x0000000074E80000-memory.dmp

Filesize
7.7MB

Download
memory/4208-5-0x0000000000C10000-0x0000000000C68000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads