nymaim | 917217e609a23bea6a5f3046453e4678e7d6b07311c75cfda71964315a9a8c59

General

Target

file.exe
Size

1.2MB
MD5

39bc1703e192b987fc386248a1b5b39b
SHA1

d814fc4e78dfba117818859528aaaf6f51b47b80
SHA256

917217e609a23bea6a5f3046453e4678e7d6b07311c75cfda71964315a9a8c59
SHA512

1bbcca0edf0b2ba9fb6c5d14ff3888efea78981a59511751ba90fab3e8f796e2c3a8e83200eae2801b615afac63985797150a53659338d8c8ae378be53e275d6
SSDEEP

24576:tizR7uK8LTFMvGc4bJy0rZM7k0bT21azJP9SXNjNW9jLp3xgZIY7eCLxYiU:GCm4tnrZ/0bT24VkNW9xONeViU

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

is-CB1HF.tmpPrintFolders.exedO3lpentp7S.exe

pid process

1684 is-CB1HF.tmp
3660 PrintFolders.exe
4820 dO3lpentp7S.exe

pid	process
1684	is-CB1HF.tmp
3660	PrintFolders.exe
4820	dO3lpentp7S.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

Processes:

PrintFolders.exe

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

Loads dropped DLL 1 IoCs

Processes:

is-CB1HF.tmp

pid process

1684 is-CB1HF.tmp
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
1684	is-CB1HF.tmp

Drops file in Program Files directory 9 IoCs

Processes:

is-CB1HF.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\is-K3BPQ.tmp	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\is-M19P3.tmp	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\is-N4CAJ.tmp	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\is-U0IVF.tmp	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\is-IITPV.tmp	is-CB1HF.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-CB1HF.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-CB1HF.tmp
File created	C:\Program Files (x86)\PrintFolders\is-OD64R.tmp	is-CB1HF.tmp

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2384 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PrintFolders.exe

pid process

3660 PrintFolders.exe
3660 PrintFolders.exe
3660 PrintFolders.exe
3660 PrintFolders.exe
3660 PrintFolders.exe
3660 PrintFolders.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PrintFolders.exe

pid process

3660 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2384 taskkill.exe

pid	process
2384	taskkill.exe

pid	process
3660	PrintFolders.exe
3660	PrintFolders.exe
3660	PrintFolders.exe
3660	PrintFolders.exe
3660	PrintFolders.exe
3660	PrintFolders.exe

pid	process
3660	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	2384	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exeis-CB1HF.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 5112 wrote to memory of 1684	5112	file.exe	is-CB1HF.tmp
PID 5112 wrote to memory of 1684	5112	file.exe	is-CB1HF.tmp
PID 5112 wrote to memory of 1684	5112	file.exe	is-CB1HF.tmp
PID 1684 wrote to memory of 3660	1684	is-CB1HF.tmp	PrintFolders.exe
PID 1684 wrote to memory of 3660	1684	is-CB1HF.tmp	PrintFolders.exe
PID 1684 wrote to memory of 3660	1684	is-CB1HF.tmp	PrintFolders.exe
PID 3660 wrote to memory of 4820	3660	PrintFolders.exe	dO3lpentp7S.exe
PID 3660 wrote to memory of 4820	3660	PrintFolders.exe	dO3lpentp7S.exe
PID 3660 wrote to memory of 4820	3660	PrintFolders.exe	dO3lpentp7S.exe
PID 3660 wrote to memory of 1860	3660	PrintFolders.exe	cmd.exe
PID 3660 wrote to memory of 1860	3660	PrintFolders.exe	cmd.exe
PID 3660 wrote to memory of 1860	3660	PrintFolders.exe	cmd.exe
PID 1860 wrote to memory of 2384	1860	cmd.exe	taskkill.exe
PID 1860 wrote to memory of 2384	1860	cmd.exe	taskkill.exe
PID 1860 wrote to memory of 2384	1860	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5112

C:\Users\Admin\AppData\Local\Temp\is-F0I7J.tmp\is-CB1HF.tmp
"C:\Users\Admin\AppData\Local\Temp\is-F0I7J.tmp\is-CB1HF.tmp" /SL4 $8005E "C:\Users\Admin\AppData\Local\Temp\file.exe" 1047415 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1684

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3660

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dO3lpentp7S.exe
4⤵
- Executes dropped EXE
PID:4820

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1860

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2384

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
51cd9988601b8f5caff98fbb9f235d6f

SHA1
0ae706b9ed8e19132b546573daf295cc51542bd4

SHA256
3f21f1d63ea62cb47344732381a078a13168d3d4379de70bb62e8b30c8a62cf9

SHA512
da2e518bec2cae35d6a63cef9c808441661b4ff458913792e4bb36b5f3e8e8d12dcdc9ed1b7060a78d9edd6fcefe0912c958f43745a1e9a04a5b18f46ac03f23

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Filesize
1.4MB

MD5
51cd9988601b8f5caff98fbb9f235d6f

SHA1
0ae706b9ed8e19132b546573daf295cc51542bd4

SHA256
3f21f1d63ea62cb47344732381a078a13168d3d4379de70bb62e8b30c8a62cf9

SHA512
da2e518bec2cae35d6a63cef9c808441661b4ff458913792e4bb36b5f3e8e8d12dcdc9ed1b7060a78d9edd6fcefe0912c958f43745a1e9a04a5b18f46ac03f23

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F0I7J.tmp\is-CB1HF.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F0I7J.tmp\is-CB1HF.tmp
Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OM8A7.tmp\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dO3lpentp7S.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dO3lpentp7S.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1684-135-0x0000000000000000-mapping.dmp

Download
memory/1860-153-0x0000000000000000-mapping.dmp

Download
memory/2384-154-0x0000000000000000-mapping.dmp

Download
memory/3660-143-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3660-142-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3660-148-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/3660-149-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3660-139-0x0000000000000000-mapping.dmp

Download
memory/3660-155-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/4820-144-0x0000000000000000-mapping.dmp

Download
memory/5112-132-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/5112-147-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/5112-134-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/5112-156-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads