nymaim | 2039f21a1e4ed098e2e5d16335e33f1223c17b9e3a723cd275fb48ad19174a34

Analysis

max time kernel
103s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2022, 12:12

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

file.exe
Size

284KB
MD5

5c0137429ec3763ce342338b0f2ba65f
SHA1

76a45e07ee9be04a8c5f84eab21c3ec994d57b73
SHA256

2039f21a1e4ed098e2e5d16335e33f1223c17b9e3a723cd275fb48ad19174a34
SHA512

8733bcf97cea60c7d872d5d269527ea568daf36b39a11fdc5605698f55f0b937bd6017382c961cbebdd018fc3d5470db07bc0d9f6bec96828df3961bb99a9ee4
SSDEEP

6144:rLRpiA2glVIpifFPtJCN1knraYHXbltx:rdpBdlhVuknraYHLl

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3032	Cleaner.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
2256	4708	WerFault.exe	81
5000	4708	WerFault.exe	81
1260	4708	WerFault.exe	81
2796	4708	WerFault.exe	81
652	4708	WerFault.exe	81
4808	4708	WerFault.exe	81
428	4708	WerFault.exe	81
892	4708	WerFault.exe	81
3100	4708	WerFault.exe	81
440	4708	WerFault.exe	81
4752	4708	WerFault.exe	81
5008	4708	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
2940	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4708	file.exe
4708	file.exe
4708	file.exe
4708	file.exe
4708	file.exe
4708	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4708	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	Cleaner.exe
Token: SeDebugPrivilege	2940	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 1984	4708	file.exe	103
PID 4708 wrote to memory of 1984	4708	file.exe	103
PID 4708 wrote to memory of 1984	4708	file.exe	103
PID 1984 wrote to memory of 3032	1984	cmd.exe	105
PID 1984 wrote to memory of 3032	1984	cmd.exe	105
PID 4708 wrote to memory of 3080	4708	file.exe	118
PID 4708 wrote to memory of 3080	4708	file.exe	118
PID 4708 wrote to memory of 3080	4708	file.exe	118
PID 3080 wrote to memory of 2940	3080	cmd.exe	120
PID 3080 wrote to memory of 2940	3080	cmd.exe	120
PID 3080 wrote to memory of 2940	3080	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 452
  2⤵
  - Program crash
  PID:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 772
  2⤵
  - Program crash
  PID:5000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 792
  2⤵
  - Program crash
  PID:1260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 792
  2⤵
  - Program crash
  PID:2796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 772
  2⤵
  - Program crash
  PID:652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 928
  2⤵
  - Program crash
  PID:4808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1000
  2⤵
  - Program crash
  PID:428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1088
  2⤵
  - Program crash
  PID:892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1384
  2⤵
  - Program crash
  PID:3100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1396
  2⤵
  - Program crash
  PID:440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1628
  2⤵
  - Program crash
  PID:4752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1716
  2⤵
  - Program crash
  PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4708 -ip 4708
1⤵
PID:1296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4708 -ip 4708
1⤵
PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4708 -ip 4708
1⤵
PID:4932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4708 -ip 4708
1⤵
PID:3584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4708 -ip 4708
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4708 -ip 4708
1⤵
PID:1128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4708 -ip 4708
1⤵
PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4708 -ip 4708
1⤵
PID:996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4708 -ip 4708
1⤵
PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4708 -ip 4708
1⤵
PID:4308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4708 -ip 4708
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4708 -ip 4708
1⤵
PID:2256

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\gRKjVd2xiOx\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
memory/3032-140-0x00000230019D0000-0x0000023001B50000-memory.dmp

Filesize
1.5MB

Download
memory/3032-142-0x0000023003800000-0x0000023003842000-memory.dmp

Filesize
264KB

Download
memory/3032-143-0x00007FFC9A380000-0x00007FFC9AE41000-memory.dmp

Filesize
10.8MB

Download
memory/3032-144-0x00007FFC9A380000-0x00007FFC9AE41000-memory.dmp

Filesize
10.8MB

Download
memory/4708-135-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download
memory/4708-132-0x0000000000819000-0x000000000083F000-memory.dmp

Filesize
152KB

Download
memory/4708-134-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download
memory/4708-145-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4708-133-0x00000000022E0000-0x000000000231F000-memory.dmp

Filesize
252KB

Download
memory/4708-151-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download