remcos | de0d4994a1ad1a24ef1fb67a79be19d78d50d1eb994542ae63385abace8c9b46

General

Target

a1f6790b7576fb5eee8c0dc29d6c1740.exe
Size

1.4MB
MD5

a1f6790b7576fb5eee8c0dc29d6c1740
SHA1

662597c705d33f7c6678e68e9b7d4b964ef1bfe2
SHA256

de0d4994a1ad1a24ef1fb67a79be19d78d50d1eb994542ae63385abace8c9b46
SHA512

443cbdecbd5a45f9468a058d3609ace5f79cf19722599e19b1e5634b616fef6c82edca667bef337f99c0152bf0c6cb3fd07a3381afcaafb2444567dfa53500c8
SSDEEP

24576:46yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Et:XY9UORVOM1jJHzaiape0hsABFRJch6L5

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/2620-9-0x0000000000A80000-0x0000000000AAC000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2620 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

560 cmd.exe

pid	process
2620	test.exe

pid	process
560	cmd.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2372-1-0x0000000000400000-0x00000000006F2000-memory.dmp	upx
behavioral1/memory/2372-30-0x0000000000400000-0x00000000006F2000-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 2620 set thread context of 2544 2620 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

2656 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

test.exe

pid process

2620 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2620 test.exe

description	pid	process	target process
PID 2620 set thread context of 2544	2620	test.exe	vbc.exe

pid	process
2656	schtasks.exe

pid	process
2620	test.exe

description	pid	process
Token: SeDebugPrivilege	2620	test.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

a1f6790b7576fb5eee8c0dc29d6c1740.execmd.exetest.exe

description	pid	process	target process
PID 2372 wrote to memory of 560	2372	a1f6790b7576fb5eee8c0dc29d6c1740.exe	cmd.exe
PID 2372 wrote to memory of 560	2372	a1f6790b7576fb5eee8c0dc29d6c1740.exe	cmd.exe
PID 2372 wrote to memory of 560	2372	a1f6790b7576fb5eee8c0dc29d6c1740.exe	cmd.exe
PID 2372 wrote to memory of 560	2372	a1f6790b7576fb5eee8c0dc29d6c1740.exe	cmd.exe
PID 560 wrote to memory of 2620	560	cmd.exe	test.exe
PID 560 wrote to memory of 2620	560	cmd.exe	test.exe
PID 560 wrote to memory of 2620	560	cmd.exe	test.exe
PID 560 wrote to memory of 2620	560	cmd.exe	test.exe
PID 2620 wrote to memory of 2656	2620	test.exe	schtasks.exe
PID 2620 wrote to memory of 2656	2620	test.exe	schtasks.exe
PID 2620 wrote to memory of 2656	2620	test.exe	schtasks.exe
PID 2620 wrote to memory of 2656	2620	test.exe	schtasks.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe
PID 2620 wrote to memory of 2544	2620	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\a1f6790b7576fb5eee8c0dc29d6c1740.exe
"C:\Users\Admin\AppData\Local\Temp\a1f6790b7576fb5eee8c0dc29d6c1740.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2372

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:560

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:2620

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3736.tmp"
4⤵
- Creates scheduled task(s)
PID:2656

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2544

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

Replay Monitor

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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\tmp3736.tmp
Filesize
1KB

MD5
3dd5ddb381095e487bb320c5dd2f455b

SHA1
93a1971430a2cfa33367859e6ca91abd1ae685b7

SHA256
b06c950de61657b1cfd72a6e59425fa97b3fae454d981ba9b333878f7d0f9509

SHA512
4c78319fa43d763de6c5a9a8924a1898575bf5287bf8bf04cc8bfc21d71173216a76f93bd5bc8ab97c619ea3aa22f3769e0900088cd78d78f677844d5926a084

Download Submit
memory/2372-30-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download
memory/2372-1-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download
memory/2544-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-56-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-21-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2544-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-52-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-50-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2544-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2620-8-0x0000000000480000-0x0000000000488000-memory.dmp

Filesize
32KB

Download
memory/2620-5-0x00000000011D0000-0x0000000001228000-memory.dmp

Filesize
352KB

Download
memory/2620-25-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2620-6-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2620-7-0x0000000004D80000-0x0000000004DC0000-memory.dmp

Filesize
256KB

Download
memory/2620-9-0x0000000000A80000-0x0000000000AAC000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads