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
behavioral1/memory/2932-9-0x0000000002000000-0x000000000202C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2932 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1284 cmd.exe

pid	process
2932	test.exe

pid	process
1284	cmd.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2776-1-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2776-10-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2776-17-0x0000000000400000-0x00000000006F1000-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

2680 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

test.exe

pid process

2932 test.exe
2932 test.exe
2932 test.exe
2932 test.exe
2932 test.exe
2932 test.exe
2932 test.exe
2932 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2932 test.exe

pid	process
2680	schtasks.exe

pid	process
2932	test.exe
2932	test.exe
2932	test.exe
2932	test.exe
2932	test.exe
2932	test.exe
2932	test.exe
2932	test.exe

description	pid	process
Token: SeDebugPrivilege	2932	test.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

dcf1c76b4cb0fa5dade95544bc704ee2.execmd.exetest.exe

description	pid	process	target process
PID 2776 wrote to memory of 1284	2776	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 2776 wrote to memory of 1284	2776	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 2776 wrote to memory of 1284	2776	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 2776 wrote to memory of 1284	2776	dcf1c76b4cb0fa5dade95544bc704ee2.exe	cmd.exe
PID 1284 wrote to memory of 2932	1284	cmd.exe	test.exe
PID 1284 wrote to memory of 2932	1284	cmd.exe	test.exe
PID 1284 wrote to memory of 2932	1284	cmd.exe	test.exe
PID 1284 wrote to memory of 2932	1284	cmd.exe	test.exe
PID 2932 wrote to memory of 2680	2932	test.exe	schtasks.exe
PID 2932 wrote to memory of 2680	2932	test.exe	schtasks.exe
PID 2932 wrote to memory of 2680	2932	test.exe	schtasks.exe
PID 2932 wrote to memory of 2680	2932	test.exe	schtasks.exe
PID 2932 wrote to memory of 2440	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2440	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2440	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2440	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2508	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2508	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2508	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2508	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2660	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2660	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2660	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2660	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2896	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2896	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2896	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2896	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2572	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2572	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2572	2932	test.exe	vbc.exe
PID 2932 wrote to memory of 2572	2932	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:2776

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1284

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp81BD.tmp"
4⤵
- Creates scheduled task(s)
PID:2680

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2440

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2508

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2660

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2896

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2572

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

System Information Discovery

1

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\tmp81BD.tmp
Filesize
1KB

MD5
2187f65a1152264b1f60d5fdaa81789c

SHA1
f849654e2882e61ad755f92ee055a4da1f8a7a32

SHA256
192fd9dd8ea058ab04c29dfc67c04e129d51e7a78f5e4af93a5a73998ddf1dcb

SHA512
61ba2d16fafd970c8478b849e637790b300af93e2eafdd133cb293510491bad0f30104bc2c3fede16555d0d8a422eaf27e766c4f5cc255d38f9baf3245d95308

Download Submit
memory/2776-1-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2776-10-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2776-17-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2932-5-0x00000000008A0000-0x00000000008F8000-memory.dmp

Filesize
352KB

Download
memory/2932-6-0x0000000074820000-0x0000000074F0E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-7-0x0000000004B50000-0x0000000004B90000-memory.dmp

Filesize
256KB

Download
memory/2932-8-0x0000000000320000-0x0000000000328000-memory.dmp

Filesize
32KB

Download
memory/2932-9-0x0000000002000000-0x000000000202C000-memory.dmp

Filesize
176KB

Download
memory/2932-16-0x0000000074820000-0x0000000074F0E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads