remcos | eae87b9a3b47e1c46e3261065051f18f2ebe1047eb00f2cad8ae018402a12ddb

General

Target

76344a986ad26a83b789803a9d347a40.exe
Size

1.4MB
MD5

76344a986ad26a83b789803a9d347a40
SHA1

a57a2f18792a92ad9a84fe05c837ccdc2459a2f3
SHA256

eae87b9a3b47e1c46e3261065051f18f2ebe1047eb00f2cad8ae018402a12ddb
SHA512

ca18a6b1c1997eba40087051cf58a1df62845174dc8a65452ba3416c8df339e25d175e3fc0fc60d1f240e6518792e83a886fd7249583e8f60d24d73b5f6bf4bd
SSDEEP

24576:B6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Eb:IY9UORVOM1jJHzaiape0hsABFRJch6L3

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/2300-9-0x0000000004CD0000-0x0000000004CFC000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2300 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2368 cmd.exe

pid	process
2300	test.exe

pid	process
2368	cmd.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2128-1-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2128-27-0x0000000000400000-0x00000000006F1000-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 2300 set thread context of 2576 2300 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

2808 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

test.exe

pid process

2300 test.exe
2300 test.exe
2300 test.exe
2300 test.exe
2300 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2300 test.exe

description	pid	process	target process
PID 2300 set thread context of 2576	2300	test.exe	vbc.exe

pid	process
2808	schtasks.exe

pid	process
2300	test.exe
2300	test.exe
2300	test.exe
2300	test.exe
2300	test.exe

description	pid	process
Token: SeDebugPrivilege	2300	test.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

76344a986ad26a83b789803a9d347a40.execmd.exetest.exe

description	pid	process	target process
PID 2128 wrote to memory of 2368	2128	76344a986ad26a83b789803a9d347a40.exe	cmd.exe
PID 2128 wrote to memory of 2368	2128	76344a986ad26a83b789803a9d347a40.exe	cmd.exe
PID 2128 wrote to memory of 2368	2128	76344a986ad26a83b789803a9d347a40.exe	cmd.exe
PID 2128 wrote to memory of 2368	2128	76344a986ad26a83b789803a9d347a40.exe	cmd.exe
PID 2368 wrote to memory of 2300	2368	cmd.exe	test.exe
PID 2368 wrote to memory of 2300	2368	cmd.exe	test.exe
PID 2368 wrote to memory of 2300	2368	cmd.exe	test.exe
PID 2368 wrote to memory of 2300	2368	cmd.exe	test.exe
PID 2300 wrote to memory of 2808	2300	test.exe	schtasks.exe
PID 2300 wrote to memory of 2808	2300	test.exe	schtasks.exe
PID 2300 wrote to memory of 2808	2300	test.exe	schtasks.exe
PID 2300 wrote to memory of 2808	2300	test.exe	schtasks.exe
PID 2300 wrote to memory of 2844	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2844	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2844	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2844	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2840	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2840	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2840	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2840	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe
PID 2300 wrote to memory of 2576	2300	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\76344a986ad26a83b789803a9d347a40.exe
"C:\Users\Admin\AppData\Local\Temp\76344a986ad26a83b789803a9d347a40.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2128

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2368

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:2300

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp40D7.tmp"
4⤵
- Creates scheduled task(s)
PID:2808

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2844

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2840

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2576

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\tmp40D7.tmp
Filesize
1KB

MD5
7949f4615aef360ca9f13a9f3a00b9f9

SHA1
3c75da155275a8d321c7ed7e3977952a9a0a516b

SHA256
cce701615b768e9ab20c9e661783313937747f9fc003134637c7e30f1ddad8f9

SHA512
b2395d0424e96e1812635ad145115a7d4e5b41646549062621f072c205bcd74a421475650cfead59d6fc285abb09529118b20f776ffe867d713be199cc31dee5

Download Submit
memory/2128-1-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2128-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2300-5-0x0000000000B10000-0x0000000000B68000-memory.dmp

Filesize
352KB

Download
memory/2300-6-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/2300-7-0x0000000004D10000-0x0000000004D50000-memory.dmp

Filesize
256KB

Download
memory/2300-8-0x00000000002D0000-0x00000000002D8000-memory.dmp

Filesize
32KB

Download
memory/2300-9-0x0000000004CD0000-0x0000000004CFC000-memory.dmp

Filesize
176KB

Download
memory/2300-25-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/2576-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-21-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2576-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads