remcos | 46c77fe1672dbf3bc3442e6958d4a00d1c2a1c89fe48642b86f5b67df540854c

General

Target

d5f6cbcdfdf98f268ea19abad222da54.exe
Size

1.4MB
MD5

d5f6cbcdfdf98f268ea19abad222da54
SHA1

005bf113195bf2d10b4c1f0b607a9a060150f00e
SHA256

46c77fe1672dbf3bc3442e6958d4a00d1c2a1c89fe48642b86f5b67df540854c
SHA512

f55c79f8fdf7ec4c19d34ee30d5afb1bf4a234155d1a4ea35e20dd22513261129196b5ba4104c4fb552f94cc7124ce342933f517bcc4d7c533af04a640495273
SSDEEP

24576:Y6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6EQ:3Y9UORVOM1jJHzaiape0hsABFRJch6LU

Score

10^/10

remcos graced rat rezer0 upx

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

GRACED

C2

thankyoulord.ddns.net:5050

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-0S5XD9
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/2892-9-0x0000000001F70000-0x0000000001F9C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2892 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1504 cmd.exe

pid	process
2892	test.exe

pid	process
1504	cmd.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2980-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2980-10-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2980-28-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

test.exe

description pid process target process

PID 2892 set thread context of 2516 2892 test.exe vbc.exe
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

2608 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

test.exe

pid process

2892 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2892 test.exe

description	pid	process	target process
PID 2892 set thread context of 2516	2892	test.exe	vbc.exe

pid	process
2608	schtasks.exe

pid	process
2892	test.exe

description	pid	process
Token: SeDebugPrivilege	2892	test.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

d5f6cbcdfdf98f268ea19abad222da54.execmd.exetest.exe

description	pid	process	target process
PID 2980 wrote to memory of 1504	2980	d5f6cbcdfdf98f268ea19abad222da54.exe	cmd.exe
PID 2980 wrote to memory of 1504	2980	d5f6cbcdfdf98f268ea19abad222da54.exe	cmd.exe
PID 2980 wrote to memory of 1504	2980	d5f6cbcdfdf98f268ea19abad222da54.exe	cmd.exe
PID 2980 wrote to memory of 1504	2980	d5f6cbcdfdf98f268ea19abad222da54.exe	cmd.exe
PID 1504 wrote to memory of 2892	1504	cmd.exe	test.exe
PID 1504 wrote to memory of 2892	1504	cmd.exe	test.exe
PID 1504 wrote to memory of 2892	1504	cmd.exe	test.exe
PID 1504 wrote to memory of 2892	1504	cmd.exe	test.exe
PID 2892 wrote to memory of 2608	2892	test.exe	schtasks.exe
PID 2892 wrote to memory of 2608	2892	test.exe	schtasks.exe
PID 2892 wrote to memory of 2608	2892	test.exe	schtasks.exe
PID 2892 wrote to memory of 2608	2892	test.exe	schtasks.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe
PID 2892 wrote to memory of 2516	2892	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\d5f6cbcdfdf98f268ea19abad222da54.exe
"C:\Users\Admin\AppData\Local\Temp\d5f6cbcdfdf98f268ea19abad222da54.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2980

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1504

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2892

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7704.tmp"
4⤵
- Creates scheduled task(s)
PID:2608

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2516

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

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\tmp7704.tmp
Filesize
1KB

MD5
935f3a74c7d1af321c5ee8a22d2fb0a7

SHA1
0d8fec9221e405eb0a8f9922c35217526053595b

SHA256
c483f739d79cac837c645097b7f11aee1e38712d44ab9ccbb2364198a6a31988

SHA512
5d8ab2ea2925983160db7893ab3e03159844c3a6cc71364c7731da139e747520fd6d053c123060049104f1020deedaf4b25e6c413875cbafa8fa33073e1bec5e

Download Submit
\Users\Admin\AppData\Local\Temp\test.exe
Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
memory/2516-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-50-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2516-52-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2516-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2892-5-0x0000000000950000-0x00000000009A8000-memory.dmp

Filesize
352KB

Download
memory/2892-6-0x00000000749E0000-0x00000000750CE000-memory.dmp

Filesize
6.9MB

Download
memory/2892-9-0x0000000001F70000-0x0000000001F9C000-memory.dmp

Filesize
176KB

Download
memory/2892-8-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download
memory/2892-27-0x00000000749E0000-0x00000000750CE000-memory.dmp

Filesize
6.9MB

Download
memory/2892-7-0x0000000004BD0000-0x0000000004C10000-memory.dmp

Filesize
256KB

Download
memory/2980-28-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2980-10-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2980-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads