nymaim | 2e6ca529baba544cf9177312c70eaddee67b8d456d0101b9275042e3db7feb4f

Analysis

max time kernel
107s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2022, 22:37

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General

Target

file.exe
Size

353KB
MD5

04d833f2a5283abf94ce91e7c3193655
SHA1

2cd80141acbd1675f49aeab06369750df7463f8d
SHA256

2e6ca529baba544cf9177312c70eaddee67b8d456d0101b9275042e3db7feb4f
SHA512

f5f2591c7a770011e450bbcd1ed024dd65cfdd3551ca13b62340a57b6a75bac309166382024f5ffd842b44408da4390ca968913a2b403f7d5a0dd9614da73ff1
SSDEEP

6144:eBC0L1AIo0HEquZiaHQWWHpvuzbgwuoE9NwVf:ephhcLVvWtunnHE9

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
4460	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0012000000022df4-142.dat	autoit_exe
behavioral2/files/0x0012000000022df4-143.dat	autoit_exe

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
1432	2128	WerFault.exe	81
3216	2128	WerFault.exe	81
3660	2128	WerFault.exe	81
2952	2128	WerFault.exe	81
32	2128	WerFault.exe	81
2664	2128	WerFault.exe	81
948	2128	WerFault.exe	81
3080	2128	WerFault.exe	81
4892	2128	WerFault.exe	81
3088	2128	WerFault.exe	81
4772	2128	WerFault.exe	81
4836	2128	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
424	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2128	file.exe
2128	file.exe
2128	file.exe
2128	file.exe
2128	file.exe
2128	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2128	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	Cleaner.exe
Token: SeDebugPrivilege	424	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 4116	2128	file.exe	101
PID 2128 wrote to memory of 4116	2128	file.exe	101
PID 2128 wrote to memory of 4116	2128	file.exe	101
PID 4116 wrote to memory of 4460	4116	cmd.exe	103
PID 4116 wrote to memory of 4460	4116	cmd.exe	103
PID 2128 wrote to memory of 856	2128	file.exe	118
PID 2128 wrote to memory of 856	2128	file.exe	118
PID 2128 wrote to memory of 856	2128	file.exe	118
PID 856 wrote to memory of 424	856	cmd.exe	122
PID 856 wrote to memory of 424	856	cmd.exe	122
PID 856 wrote to memory of 424	856	cmd.exe	122

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:2128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 460
  2⤵
  - Program crash
  PID:1432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 764
  2⤵
  - Program crash
  PID:3216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 808
  2⤵
  - Program crash
  PID:3660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 808
  2⤵
  - Program crash
  PID:2952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 828
  2⤵
  - Program crash
  PID:32
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 928
  2⤵
  - Program crash
  PID:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1004
  2⤵
  - Program crash
  PID:948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1048
  2⤵
  - Program crash
  PID:3080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1404
  2⤵
  - Program crash
  PID:4892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4116
- - C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1384
  2⤵
  - Program crash
  PID:3088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1704
  2⤵
  - Program crash
  PID:4772
- 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:856
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 1688
  2⤵
  - Program crash
  PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2128 -ip 2128
1⤵
PID:856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2128 -ip 2128
1⤵
PID:2896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2128 -ip 2128
1⤵
PID:2852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 2128 -ip 2128
1⤵
PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2128 -ip 2128
1⤵
PID:1256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2128 -ip 2128
1⤵
PID:340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2128 -ip 2128
1⤵
PID:3148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 2128 -ip 2128
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2128 -ip 2128
1⤵
PID:1272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2128 -ip 2128
1⤵
PID:4200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2128 -ip 2128
1⤵
PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2128 -ip 2128
1⤵
PID:4236

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Cleaner.exe

Filesize
3.8MB

MD5
04514bd4962f7d60679434e0ebe49184

SHA1
1493a5447eb8156a7d7aecff60ee8bfba2209526

SHA256
c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568

SHA512
a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e

Download Submit
C:\Users\Admin\AppData\Local\Temp\rzYfVLatevoBNygnOOGGL1\Cleaner.exe

Filesize
3.8MB

MD5
04514bd4962f7d60679434e0ebe49184

SHA1
1493a5447eb8156a7d7aecff60ee8bfba2209526

SHA256
c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568

SHA512
a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e

Download Submit
memory/2128-136-0x0000000002190000-0x00000000021CF000-memory.dmp

Filesize
252KB

Download
memory/2128-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2128-138-0x000000000050C000-0x0000000000533000-memory.dmp

Filesize
156KB

Download
memory/2128-135-0x000000000050C000-0x0000000000533000-memory.dmp

Filesize
156KB

Download
memory/2128-156-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2128-155-0x000000000050C000-0x0000000000533000-memory.dmp

Filesize
156KB

Download
memory/2128-139-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2128-137-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/4460-148-0x00007FFCEE380000-0x00007FFCEEE41000-memory.dmp

Filesize
10.8MB

Download
memory/4460-147-0x00007FFCEE380000-0x00007FFCEEE41000-memory.dmp

Filesize
10.8MB

Download
memory/4460-146-0x000002524D5A0000-0x000002524D5E2000-memory.dmp

Filesize
264KB

Download
memory/4460-144-0x000002524B770000-0x000002524B8C6000-memory.dmp

Filesize
1.3MB

Download