remcos | 7c056b61fb03a2d99a6e503c8335b474e02a3d6e17919217594621fc9f5c0673

General

Target

744842475e617910e5050b3975c12757.exe
Size

1.4MB
MD5

744842475e617910e5050b3975c12757
SHA1

4d5ed357736952b89464aba1b0076a896ea64a0c
SHA256

7c056b61fb03a2d99a6e503c8335b474e02a3d6e17919217594621fc9f5c0673
SHA512

d648a7ca437fe3d4973d716b5393a539e6556840f81f174159f8b4f0eb5d7f7f2335859bd878f3412320910aeffd357036b2ef681d2c714bb3bab12ff58259e7
SSDEEP

24576:46yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ES:XY9UORVOM1jJHzaiape0hsABFRJch6Lm

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
behavioral2/memory/2252-12-0x0000000005A00000-0x0000000005A2C000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation test.exe
Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2252 test.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	test.exe

pid	process
2252	test.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2192-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2192-14-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2192-27-0x0000000000400000-0x00000000006F1000-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 2252 set thread context of 3744 2252 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

1256 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

test.exe

pid process

2252 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2252 test.exe

description	pid	process	target process
PID 2252 set thread context of 3744	2252	test.exe	vbc.exe

pid	process
1256	schtasks.exe

pid	process
2252	test.exe

description	pid	process
Token: SeDebugPrivilege	2252	test.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

744842475e617910e5050b3975c12757.execmd.exetest.exe

description	pid	process	target process
PID 2192 wrote to memory of 5096	2192	744842475e617910e5050b3975c12757.exe	cmd.exe
PID 2192 wrote to memory of 5096	2192	744842475e617910e5050b3975c12757.exe	cmd.exe
PID 2192 wrote to memory of 5096	2192	744842475e617910e5050b3975c12757.exe	cmd.exe
PID 5096 wrote to memory of 2252	5096	cmd.exe	test.exe
PID 5096 wrote to memory of 2252	5096	cmd.exe	test.exe
PID 5096 wrote to memory of 2252	5096	cmd.exe	test.exe
PID 2252 wrote to memory of 1256	2252	test.exe	schtasks.exe
PID 2252 wrote to memory of 1256	2252	test.exe	schtasks.exe
PID 2252 wrote to memory of 1256	2252	test.exe	schtasks.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe
PID 2252 wrote to memory of 3744	2252	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\744842475e617910e5050b3975c12757.exe
"C:\Users\Admin\AppData\Local\Temp\744842475e617910e5050b3975c12757.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2192

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:5096

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB258.tmp"
4⤵
- Creates scheduled task(s)
PID:1256

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:3744

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
218KB

MD5
8143206d6ee50cedac287f48bdd5e9ce

SHA1
6baa594d3d5f19bb534b368abd2824022730cf0d

SHA256
c522b4898e4e3087a7af6026b87ccdf53366a69360026377b5c5785db5a61a72

SHA512
2d85d6ac9e95d40da8625f249e449388fb481fe1bdfe745a7a907e5dc0f6e404817ae7b76d81322209c2eefd87fb5dbdf110bd98dfd080168b053dad8b44d628

Download Submit
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\tmpB258.tmp
Filesize
1KB

MD5
7afcb5ac27ba6486390ed09397525d82

SHA1
beedb6a613c2bd009e6d180d0a9545c9b810b9e9

SHA256
e04a4ca13e4dc28ae9f2e1e49e5e925ef51ce93eeb50f6dd1e1ad598f33a6bf2

SHA512
fb2f68922ac726ca0ccba47447c182b95f4255b9e2b1215c395533c22d117d7187e9e571c058fc7c5cf9dd5a5c01a147b60571b73cfc8856ff498c4dfd2dca4e

Download Submit
memory/2192-14-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2192-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2192-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2252-5-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/2252-9-0x0000000004E60000-0x0000000004E70000-memory.dmp

Filesize
64KB

Download
memory/2252-10-0x00000000050A0000-0x00000000050AA000-memory.dmp

Filesize
40KB

Download
memory/2252-11-0x0000000005090000-0x0000000005098000-memory.dmp

Filesize
32KB

Download
memory/2252-13-0x0000000005AD0000-0x0000000005B6C000-memory.dmp

Filesize
624KB

Download
memory/2252-12-0x0000000005A00000-0x0000000005A2C000-memory.dmp

Filesize
176KB

Download
memory/2252-8-0x0000000004ED0000-0x0000000004F62000-memory.dmp

Filesize
584KB

Download
memory/2252-7-0x00000000053E0000-0x0000000005984000-memory.dmp

Filesize
5.6MB

Download
memory/2252-24-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/2252-6-0x00000000005D0000-0x0000000000628000-memory.dmp

Filesize
352KB

Download
memory/3744-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-41-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3744-53-0x0000000000400000-0x0000000000420000-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