2733f90b77a0b67f033a5188ca6d1a46e754dff03b5656dafb034d523e121c92

General

Target

dcf1c76b4cb0fa5dade95544bc704ee2.exe
Size

1.4MB
MD5

dcf1c76b4cb0fa5dade95544bc704ee2
SHA1

c3a7e2355af9688be570175b05d86dd568180a32
SHA256

2733f90b77a0b67f033a5188ca6d1a46e754dff03b5656dafb034d523e121c92
SHA512

42723a99564bedb335926c71ba2e2f0442ea31ceec25aa79cf9bf2d4fdd76f3abefa3aa834eba4c7d258cea23393aef05d7cbf04297074f36d8ab6e19e9f167a
SSDEEP

24576:b6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6E7:GY9UORVOM1jJHzaiape0hsABFRJch6Lv

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/1680-12-0x00000000055D0000-0x00000000055FC000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation test.exe
Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

1680 test.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	test.exe

pid	process
1680	test.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2272-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2272-14-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2272-22-0x0000000000400000-0x00000000006F1000-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

4188 schtasks.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

test.exe

pid process

1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
1680 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 1680 test.exe

pid	process
4188	schtasks.exe

pid	process
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe
1680	test.exe

description	pid	process
Token: SeDebugPrivilege	1680	test.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

dcf1c76b4cb0fa5dade95544bc704ee2.execmd.exetest.exe

description	pid	process	target process
PID 2272 wrote to memory of 428	2272	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 2272 wrote to memory of 428	2272	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 2272 wrote to memory of 428	2272	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 428 wrote to memory of 1680	428	cmd.exe	test.exe
PID 428 wrote to memory of 1680	428	cmd.exe	test.exe
PID 428 wrote to memory of 1680	428	cmd.exe	test.exe
PID 1680 wrote to memory of 4188	1680	test.exe	schtasks.exe
PID 1680 wrote to memory of 4188	1680	test.exe	schtasks.exe
PID 1680 wrote to memory of 4188	1680	test.exe	schtasks.exe
PID 1680 wrote to memory of 644	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 644	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 644	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 592	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 592	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 592	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 1576	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 1576	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 1576	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 3344	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 3344	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 3344	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 4384	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 4384	1680	test.exe	vbc.exe
PID 1680 wrote to memory of 4384	1680	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\dcf1c76b4cb0fa5dade95544bc704ee2.exe
"C:\Users\Admin\AppData\Local\Temp\dcf1c76b4cb0fa5dade95544bc704ee2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:428

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:1680

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5D81.tmp"
4⤵
- Creates scheduled task(s)
PID:4188

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:644

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:592

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:1576

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:3344

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:4384

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

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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\tmp5D81.tmp
Filesize
1KB

MD5
66c45f2dc09e157e96cd885a1cc9652e

SHA1
4eacbb2bbb7bd501e764040b12ec68d49e8d78f1

SHA256
f05ce7bb8baa8178c192b240f098c005efa6c2041be7d9ffe4221ba290ead940

SHA512
df08efc2285004894c75e35c6ef3d85b18d2dd55a894636bb1ee2b7314ab99d9bda39eee926d8e8023126ca50d2083fad464b7795e159be4aafc7deb4e29804d

Download Submit
memory/1680-9-0x0000000005270000-0x0000000005280000-memory.dmp

Filesize
64KB

Download
memory/1680-6-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-7-0x0000000005680000-0x0000000005C24000-memory.dmp

Filesize
5.6MB

Download
memory/1680-8-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/1680-10-0x0000000005060000-0x000000000506A000-memory.dmp

Filesize
40KB

Download
memory/1680-11-0x0000000005050000-0x0000000005058000-memory.dmp

Filesize
32KB

Download
memory/1680-12-0x00000000055D0000-0x00000000055FC000-memory.dmp

Filesize
176KB

Download
memory/1680-13-0x0000000005CD0000-0x0000000005D6C000-memory.dmp

Filesize
624KB

Download
memory/1680-5-0x0000000000610000-0x0000000000668000-memory.dmp

Filesize
352KB

Download
memory/1680-21-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/2272-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2272-14-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2272-22-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads